TY  - JOUR
AU  - Laketić, Slađana
AU  - Rakin, Marko
AU  - Momčilović, Miloš
AU  - Ciganović, Jovan
AU  - Veljović, Đorđe N.
AU  - Cvijović-Alagić, Ivana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9735
AB  - The effects of picosecond Nd:YAG laser irradiation on chemical and morphological surface characteristics of the commercially pure titanium and Ti-13Nb-13Zr alloy in air and argon atmospheres were studied under different laser output energy values. During the interaction of laser irradiation with the investigated materials, a part of the energy was absorbed on the target surface, influencing surface modifications. Laser beam interaction with the target surface resulted in various morphological alterations, resulting in crater formation and the presence of microcracks and hydrodynamic structures. Moreover, different chemical changes were induced on the target materials' surfaces, resulting in the titanium oxide formation in the irradiation-affected area and consequently increasing the irradiation energy absorption. Given the high energy absorption at the site of interaction, the dimensions of the surface damaged area increased. Consequently, surface roughness increased. The appearance of surface oxides also led to the increased material hardness in the surface-modified area. Observed chemical and morphological changes were pronounced after laser irradiation of the Ti-13Nb-13Zr alloy surface.
PB  - Springer, New York
T2  - International Journal of Minerals Metallurgy and Materials
T1  - Surface modifications of biometallic commercially pure Ti and Ti-13Nb-13Zr alloy by picosecond Nd:YAG laser
DO  - 10.1007/s12613-020-2061-9
ER  - 

@article{
author = "Laketić, Slađana and Rakin, Marko and Momčilović, Miloš and Ciganović, Jovan and Veljović, Đorđe N. and Cvijović-Alagić, Ivana",
year = "2021",
abstract = "The effects of picosecond Nd:YAG laser irradiation on chemical and morphological surface characteristics of the commercially pure titanium and Ti-13Nb-13Zr alloy in air and argon atmospheres were studied under different laser output energy values. During the interaction of laser irradiation with the investigated materials, a part of the energy was absorbed on the target surface, influencing surface modifications. Laser beam interaction with the target surface resulted in various morphological alterations, resulting in crater formation and the presence of microcracks and hydrodynamic structures. Moreover, different chemical changes were induced on the target materials' surfaces, resulting in the titanium oxide formation in the irradiation-affected area and consequently increasing the irradiation energy absorption. Given the high energy absorption at the site of interaction, the dimensions of the surface damaged area increased. Consequently, surface roughness increased. The appearance of surface oxides also led to the increased material hardness in the surface-modified area. Observed chemical and morphological changes were pronounced after laser irradiation of the Ti-13Nb-13Zr alloy surface.",
publisher = "Springer, New York",
journal = "International Journal of Minerals Metallurgy and Materials",
title = "Surface modifications of biometallic commercially pure Ti and Ti-13Nb-13Zr alloy by picosecond Nd:YAG laser",
doi = "10.1007/s12613-020-2061-9"
}

Laketić, S., Rakin, M., Momčilović, M., Ciganović, J., Veljović, Đ. N.,& Cvijović-Alagić, I.. (2021). Surface modifications of biometallic commercially pure Ti and Ti-13Nb-13Zr alloy by picosecond Nd:YAG laser. in International Journal of Minerals Metallurgy and Materials
Springer, New York..
https://doi.org/10.1007/s12613-020-2061-9

Laketić S, Rakin M, Momčilović M, Ciganović J, Veljović ĐN, Cvijović-Alagić I. Surface modifications of biometallic commercially pure Ti and Ti-13Nb-13Zr alloy by picosecond Nd:YAG laser. in International Journal of Minerals Metallurgy and Materials. 2021;.
doi:10.1007/s12613-020-2061-9 .

Laketić, Slađana, Rakin, Marko, Momčilović, Miloš, Ciganović, Jovan, Veljović, Đorđe N., Cvijović-Alagić, Ivana, "Surface modifications of biometallic commercially pure Ti and Ti-13Nb-13Zr alloy by picosecond Nd:YAG laser" in International Journal of Minerals Metallurgy and Materials (2021),
https://doi.org/10.1007/s12613-020-2061-9 . .

TY  - JOUR
AU  - Maksimović, Vesna
AU  - Kusigerski, Vladan
AU  - Stoiljković, Milovan
AU  - Maletaškić, Jelena
AU  - Nikolić, Nebojša D.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8950
AB  - Nickel−cobalt (Ni−Co) alloy powders were produced galvanostatically by using sulphate electrolytes withvarious ratios of Ni2+/Co2+ (mole ratios). The morphology, phase structure, chemical composition and magneticproperties were examined by scanning electron microscope (SEM), X-ray diffractometer (XRD), atomic emissionspectrometer (AES), and SQUID-based magnetometer, respectively. Morphology of the particles changed fromcauliflower-like and dendritic to coral-like and spongy-like ones with increasing Ni2+/Co2+ ratio from 0.25 to 4.0. XRDanalysis of the Ni−Co powders revealed that the decrease of Ni2+/Co2+ ratios (the increase of Co content) caused achange of structure from face centered cubic (FCC) obtained for the ratios of 4.0, 1.5 and 0.67 to a mixture of FCC andhexagonal closed-packed (HCP) phases for the ratio of 0.25. The increasing content of nickel led to change ofmechanism of electrolysis from irregular (up to ~40 wt.% Ni in the electrolytes) to close to equilibrium (between~40 and 60 wt.% Ni in the electrolytes) and anomalous co-deposition (over 60 wt.% Ni in the electrolytes) type. All ofthe obtained Ni−Co alloy samples behaved as soft magnetic materials while their magnetic parameters showedimmediate composition dependence since both coercivity and saturation magnetization almost linearly increased withincrease of the Co content.
T2  - Transactions of Nonferrous Metals Society of China
T1  - Influence of Ni2+/Co2+ ratio in electrolyte on morphology, structure and magnetic properties of electrolytically produced Ni−Co alloy powders
VL  - 30
IS  - 4
SP  - 1046
EP  - 1057
DO  - 10.1016/S1003-6326(20)65276-1
ER  - 

@article{
author = "Maksimović, Vesna and Kusigerski, Vladan and Stoiljković, Milovan and Maletaškić, Jelena and Nikolić, Nebojša D.",
year = "2020",
abstract = "Nickel−cobalt (Ni−Co) alloy powders were produced galvanostatically by using sulphate electrolytes withvarious ratios of Ni2+/Co2+ (mole ratios). The morphology, phase structure, chemical composition and magneticproperties were examined by scanning electron microscope (SEM), X-ray diffractometer (XRD), atomic emissionspectrometer (AES), and SQUID-based magnetometer, respectively. Morphology of the particles changed fromcauliflower-like and dendritic to coral-like and spongy-like ones with increasing Ni2+/Co2+ ratio from 0.25 to 4.0. XRDanalysis of the Ni−Co powders revealed that the decrease of Ni2+/Co2+ ratios (the increase of Co content) caused achange of structure from face centered cubic (FCC) obtained for the ratios of 4.0, 1.5 and 0.67 to a mixture of FCC andhexagonal closed-packed (HCP) phases for the ratio of 0.25. The increasing content of nickel led to change ofmechanism of electrolysis from irregular (up to ~40 wt.% Ni in the electrolytes) to close to equilibrium (between~40 and 60 wt.% Ni in the electrolytes) and anomalous co-deposition (over 60 wt.% Ni in the electrolytes) type. All ofthe obtained Ni−Co alloy samples behaved as soft magnetic materials while their magnetic parameters showedimmediate composition dependence since both coercivity and saturation magnetization almost linearly increased withincrease of the Co content.",
journal = "Transactions of Nonferrous Metals Society of China",
title = "Influence of Ni2+/Co2+ ratio in electrolyte on morphology, structure and magnetic properties of electrolytically produced Ni−Co alloy powders",
volume = "30",
number = "4",
pages = "1046-1057",
doi = "10.1016/S1003-6326(20)65276-1"
}

Maksimović, V., Kusigerski, V., Stoiljković, M., Maletaškić, J.,& Nikolić, N. D.. (2020). Influence of Ni2+/Co2+ ratio in electrolyte on morphology, structure and magnetic properties of electrolytically produced Ni−Co alloy powders. in Transactions of Nonferrous Metals Society of China, 30(4), 1046-1057.
https://doi.org/10.1016/S1003-6326(20)65276-1

Maksimović V, Kusigerski V, Stoiljković M, Maletaškić J, Nikolić ND. Influence of Ni2+/Co2+ ratio in electrolyte on morphology, structure and magnetic properties of electrolytically produced Ni−Co alloy powders. in Transactions of Nonferrous Metals Society of China. 2020;30(4):1046-1057.
doi:10.1016/S1003-6326(20)65276-1 .

Maksimović, Vesna, Kusigerski, Vladan, Stoiljković, Milovan, Maletaškić, Jelena, Nikolić, Nebojša D., "Influence of Ni2+/Co2+ ratio in electrolyte on morphology, structure and magnetic properties of electrolytically produced Ni−Co alloy powders" in Transactions of Nonferrous Metals Society of China, 30, no. 4 (2020):1046-1057,
https://doi.org/10.1016/S1003-6326(20)65276-1 . .

TY  - JOUR
AU  - Momčilović, Miloš
AU  - Petrović, Jelena
AU  - Ciganović, Jovan
AU  - Cvijović-Alagić, Ivana
AU  - Koldžić, Filip
AU  - Živković, Sanja
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8570
AB  - The application of an alternative laser-induced breakdown spectroscopy (LIBS) method based on transversely excited atmospheric (TEA) CO2 laser was investigated for the first time for estimating the hardness of metallic materials. The human eye-safe (TEA) CO2 laser, operating at 10.6 µm, was used for plasma generation. The LIBS spectra were recorded by employing a cost-effective CCD camera for the time-integrated and spatial resolved measurements. The cast iron and aluminum alloys samples with different hardness have been tested. The ratio between the magnesium ionic and neutral lines in LIBS spectra was applied for estimating the material hardness. In addition, the hardness of all samples included in this study was determined using the conventional method for material hardness determination, i.e. Vickers hardness test. The linear dependence of magnesium lines intensity ratio on the sample’s hardness was obtained for both kinds of materials. Profilometric measurements were used to verify that the newly-introduced method is almost nondestructive for the investigated metals. The results obtained in the present work confirmed the potential of using this original LIBS system not only for the fast elemental analysis but also for the direct estimation of the hardness of metals and alloys. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.
T2  - Plasma Chemistry and Plasma Processing
T1  - Laser-Induced Plasma as a Method for the Metallic Materials Hardness Estimation: An Alternative Approach
VL  - 40
IS  - 2
SP  - 499
EP  - 510
DO  - 10.1007/s11090-020-10063-5
ER  - 

@article{
author = "Momčilović, Miloš and Petrović, Jelena and Ciganović, Jovan and Cvijović-Alagić, Ivana and Koldžić, Filip and Živković, Sanja",
year = "2020",
abstract = "The application of an alternative laser-induced breakdown spectroscopy (LIBS) method based on transversely excited atmospheric (TEA) CO2 laser was investigated for the first time for estimating the hardness of metallic materials. The human eye-safe (TEA) CO2 laser, operating at 10.6 µm, was used for plasma generation. The LIBS spectra were recorded by employing a cost-effective CCD camera for the time-integrated and spatial resolved measurements. The cast iron and aluminum alloys samples with different hardness have been tested. The ratio between the magnesium ionic and neutral lines in LIBS spectra was applied for estimating the material hardness. In addition, the hardness of all samples included in this study was determined using the conventional method for material hardness determination, i.e. Vickers hardness test. The linear dependence of magnesium lines intensity ratio on the sample’s hardness was obtained for both kinds of materials. Profilometric measurements were used to verify that the newly-introduced method is almost nondestructive for the investigated metals. The results obtained in the present work confirmed the potential of using this original LIBS system not only for the fast elemental analysis but also for the direct estimation of the hardness of metals and alloys. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.",
journal = "Plasma Chemistry and Plasma Processing",
title = "Laser-Induced Plasma as a Method for the Metallic Materials Hardness Estimation: An Alternative Approach",
volume = "40",
number = "2",
pages = "499-510",
doi = "10.1007/s11090-020-10063-5"
}

Momčilović, M., Petrović, J., Ciganović, J., Cvijović-Alagić, I., Koldžić, F.,& Živković, S.. (2020). Laser-Induced Plasma as a Method for the Metallic Materials Hardness Estimation: An Alternative Approach. in Plasma Chemistry and Plasma Processing, 40(2), 499-510.
https://doi.org/10.1007/s11090-020-10063-5

Momčilović M, Petrović J, Ciganović J, Cvijović-Alagić I, Koldžić F, Živković S. Laser-Induced Plasma as a Method for the Metallic Materials Hardness Estimation: An Alternative Approach. in Plasma Chemistry and Plasma Processing. 2020;40(2):499-510.
doi:10.1007/s11090-020-10063-5 .

Momčilović, Miloš, Petrović, Jelena, Ciganović, Jovan, Cvijović-Alagić, Ivana, Koldžić, Filip, Živković, Sanja, "Laser-Induced Plasma as a Method for the Metallic Materials Hardness Estimation: An Alternative Approach" in Plasma Chemistry and Plasma Processing, 40, no. 2 (2020):499-510,
https://doi.org/10.1007/s11090-020-10063-5 . .

TY  - JOUR
AU  - Jakovljević, Ksenija
AU  - Mišljenović, Tomica
AU  - Savović, Jelena
AU  - Ranković, Dragan
AU  - Ranđelović, Dragana
AU  - Mihailović, Nevena
AU  - Jovanović, Slobodan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8746
AB  - The purpose of this study was to examine the accumulation potential of spontaneously developed Tussilago farfara populations colonizing sites with different levels of anthropogenic pollution. Physical characteristics of the soil are presented, together with the concentrations of macroelements and microelements (Ca, Mg, Fe, S, Al, Pb, Zn, Cu, Cd, Mn, As, Sb, Ag, Ti, and Sr) in both soil and plants. The biological concentration, accumulation, and translocation factors were used to assess the potential for heavy metal accumulation. Considerable differences were found among assessions from unevenly contaminated habitats, particularly in comparison with an unpolluted site. In line with the ore’s characteristics, substrate samples from polluted sites were heavily contaminated with Pb, Zn, As, and Sb. Increased levels of microelements were also detected in plant samples from flotation tailings. Despite active absorption of Zn, Cu, Cd, Mn, and Sr by the plants from mining sites, the detected quantities of these elements in all samples were below the hyperaccumulation threshold. However, the obtained results indicate that the use of T. farfara from such sites in traditional medicine could pose a risk to human health due to accumulation of several toxic elements in the plant’s aboveground tissues. Additionally, as a successful primary colonizer and stabilizer of technogenic substrates, T. farfara has an important role in the initial phases of revegetation of highly contaminated sites. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
T2  - Environmental Science and Pollution Research
T1  - Accumulation of trace elements in Tussilago farfara colonizing post-flotation tailing sites in Serbia
VL  - 27
IS  - 4
SP  - 4089
EP  - 4103
DO  - 10.1007/s11356-019-07010-z
ER  - 

@article{
author = "Jakovljević, Ksenija and Mišljenović, Tomica and Savović, Jelena and Ranković, Dragan and Ranđelović, Dragana and Mihailović, Nevena and Jovanović, Slobodan",
year = "2020",
abstract = "The purpose of this study was to examine the accumulation potential of spontaneously developed Tussilago farfara populations colonizing sites with different levels of anthropogenic pollution. Physical characteristics of the soil are presented, together with the concentrations of macroelements and microelements (Ca, Mg, Fe, S, Al, Pb, Zn, Cu, Cd, Mn, As, Sb, Ag, Ti, and Sr) in both soil and plants. The biological concentration, accumulation, and translocation factors were used to assess the potential for heavy metal accumulation. Considerable differences were found among assessions from unevenly contaminated habitats, particularly in comparison with an unpolluted site. In line with the ore’s characteristics, substrate samples from polluted sites were heavily contaminated with Pb, Zn, As, and Sb. Increased levels of microelements were also detected in plant samples from flotation tailings. Despite active absorption of Zn, Cu, Cd, Mn, and Sr by the plants from mining sites, the detected quantities of these elements in all samples were below the hyperaccumulation threshold. However, the obtained results indicate that the use of T. farfara from such sites in traditional medicine could pose a risk to human health due to accumulation of several toxic elements in the plant’s aboveground tissues. Additionally, as a successful primary colonizer and stabilizer of technogenic substrates, T. farfara has an important role in the initial phases of revegetation of highly contaminated sites. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.",
journal = "Environmental Science and Pollution Research",
title = "Accumulation of trace elements in Tussilago farfara colonizing post-flotation tailing sites in Serbia",
volume = "27",
number = "4",
pages = "4089-4103",
doi = "10.1007/s11356-019-07010-z"
}

Jakovljević, K., Mišljenović, T., Savović, J., Ranković, D., Ranđelović, D., Mihailović, N.,& Jovanović, S.. (2020). Accumulation of trace elements in Tussilago farfara colonizing post-flotation tailing sites in Serbia. in Environmental Science and Pollution Research, 27(4), 4089-4103.
https://doi.org/10.1007/s11356-019-07010-z

Jakovljević K, Mišljenović T, Savović J, Ranković D, Ranđelović D, Mihailović N, Jovanović S. Accumulation of trace elements in Tussilago farfara colonizing post-flotation tailing sites in Serbia. in Environmental Science and Pollution Research. 2020;27(4):4089-4103.
doi:10.1007/s11356-019-07010-z .

Jakovljević, Ksenija, Mišljenović, Tomica, Savović, Jelena, Ranković, Dragan, Ranđelović, Dragana, Mihailović, Nevena, Jovanović, Slobodan, "Accumulation of trace elements in Tussilago farfara colonizing post-flotation tailing sites in Serbia" in Environmental Science and Pollution Research, 27, no. 4 (2020):4089-4103,
https://doi.org/10.1007/s11356-019-07010-z . .

TY  - JOUR
AU  - Trtica, Milan
AU  - Stašić, Jelena
AU  - Limpouch, Jiri
AU  - Gavrilov, Peter T.
AU  - Chen, X.
AU  - Ciganović, Jovan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8608
AB  - The behavior of 16Cr3Al ODS steel (oxide dispersion strengthened steel), widely employed structural fusion material, under high-intensity laser radiation with intensity up to 10(14)W/cm(2) was investigated in air, helium and vacuum surrounding. Employed system was 65 fs laser at 804 nm, with applied pulse energy up to 5.25 mJ. Morphological effects were studied - cracking, crater parameters (depth, cross-section), LIPSS (laser-induced periodic surface structures) formation at the crater periphery, hydrodynamic effects, as well as chemical variations on the surface. Ablation thresholds were also determined for all three ambiences (for 100 applied pulses), and they were 0.30 J/cm(2), 0.23 J/cm(2) and 0.39 J/cm(2) in air, helium and vacuum, respectively. Plasma occurred in all experiments and it was most prominent in vacuum due to strongest laser-material coupling.
T2  - Fusion Engineering and Design
T1  - Surface behavior of 16Cr3Al ODS steel—Effects of high laser intensity 1014 W/cm2 in ambiences of air, helium and vacuum
VL  - 150
SP  - 111360
DO  - 10.1016/j.fusengdes.2019.111360
ER  - 

@article{
author = "Trtica, Milan and Stašić, Jelena and Limpouch, Jiri and Gavrilov, Peter T. and Chen, X. and Ciganović, Jovan",
year = "2020",
abstract = "The behavior of 16Cr3Al ODS steel (oxide dispersion strengthened steel), widely employed structural fusion material, under high-intensity laser radiation with intensity up to 10(14)W/cm(2) was investigated in air, helium and vacuum surrounding. Employed system was 65 fs laser at 804 nm, with applied pulse energy up to 5.25 mJ. Morphological effects were studied - cracking, crater parameters (depth, cross-section), LIPSS (laser-induced periodic surface structures) formation at the crater periphery, hydrodynamic effects, as well as chemical variations on the surface. Ablation thresholds were also determined for all three ambiences (for 100 applied pulses), and they were 0.30 J/cm(2), 0.23 J/cm(2) and 0.39 J/cm(2) in air, helium and vacuum, respectively. Plasma occurred in all experiments and it was most prominent in vacuum due to strongest laser-material coupling.",
journal = "Fusion Engineering and Design",
title = "Surface behavior of 16Cr3Al ODS steel—Effects of high laser intensity 1014 W/cm2 in ambiences of air, helium and vacuum",
volume = "150",
pages = "111360",
doi = "10.1016/j.fusengdes.2019.111360"
}

Trtica, M., Stašić, J., Limpouch, J., Gavrilov, P. T., Chen, X.,& Ciganović, J.. (2020). Surface behavior of 16Cr3Al ODS steel—Effects of high laser intensity 1014 W/cm2 in ambiences of air, helium and vacuum. in Fusion Engineering and Design, 150, 111360.
https://doi.org/10.1016/j.fusengdes.2019.111360

Trtica M, Stašić J, Limpouch J, Gavrilov PT, Chen X, Ciganović J. Surface behavior of 16Cr3Al ODS steel—Effects of high laser intensity 1014 W/cm2 in ambiences of air, helium and vacuum. in Fusion Engineering and Design. 2020;150:111360.
doi:10.1016/j.fusengdes.2019.111360 .

Trtica, Milan, Stašić, Jelena, Limpouch, Jiri, Gavrilov, Peter T., Chen, X., Ciganović, Jovan, "Surface behavior of 16Cr3Al ODS steel—Effects of high laser intensity 1014 W/cm2 in ambiences of air, helium and vacuum" in Fusion Engineering and Design, 150 (2020):111360,
https://doi.org/10.1016/j.fusengdes.2019.111360 . .

TY  - JOUR
AU  - Dimitrijević, Stevan P.
AU  - Vurdelja, Borislava D.
AU  - Dimitrijević, Silvana B.
AU  - Veljković, Filip M.
AU  - Kamberović, Željko
AU  - Veličković, Suzana
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8569
AB  - Corrosion products formed on the surface of two silver brazing alloys after the potentiostatic polarization in 3.5% sodium chloride solution were characterized by the standard methods such as, the X-ray diffraction, micro-Raman spectroscopy, and scanning electron microscopy with energy-dispersive spectroscopy. This paper presents the results of a laser desorption/ionization mass spectrometry (LDI MS) analysis as a new approach to the characterization of corrosion products. The potential of the anodic polarization was 0.5 V versus saturated calomel electrode, and the process duration was 300 s. The corrosion layers on both investigated alloys were similar in composition with cuprous chloride and silver chloride as the main components and had strong indications of cuprous oxide formation. The major difference between these two layers was the existence of zinc hydroxychloride as the corrosion product of Ag-Cu-Zn alloy. Palladium compounds were not found in the case of Ag-Cu-Pd alloy. The results of different methods have shown a good consistency. Complementarity between the used methods was useful in the interpretation of the results for each used method. This study has demonstrated that LDI MS can be used as an efficient additional method together with the traditional ones.
T2  - Corrosion Reviews
T1  - Complementary methods for characterization of the corrosion products on the surface of Ag60Cu26Zn14 and Ag58.5Cu31.5Pd10 brazing alloys
VL  - 38
IS  - 2
SP  - 111
EP  - 125
DO  - 10.1515/corrrev-2019-0067
ER  - 

@article{
author = "Dimitrijević, Stevan P. and Vurdelja, Borislava D. and Dimitrijević, Silvana B. and Veljković, Filip M. and Kamberović, Željko and Veličković, Suzana",
year = "2020",
abstract = "Corrosion products formed on the surface of two silver brazing alloys after the potentiostatic polarization in 3.5% sodium chloride solution were characterized by the standard methods such as, the X-ray diffraction, micro-Raman spectroscopy, and scanning electron microscopy with energy-dispersive spectroscopy. This paper presents the results of a laser desorption/ionization mass spectrometry (LDI MS) analysis as a new approach to the characterization of corrosion products. The potential of the anodic polarization was 0.5 V versus saturated calomel electrode, and the process duration was 300 s. The corrosion layers on both investigated alloys were similar in composition with cuprous chloride and silver chloride as the main components and had strong indications of cuprous oxide formation. The major difference between these two layers was the existence of zinc hydroxychloride as the corrosion product of Ag-Cu-Zn alloy. Palladium compounds were not found in the case of Ag-Cu-Pd alloy. The results of different methods have shown a good consistency. Complementarity between the used methods was useful in the interpretation of the results for each used method. This study has demonstrated that LDI MS can be used as an efficient additional method together with the traditional ones.",
journal = "Corrosion Reviews",
title = "Complementary methods for characterization of the corrosion products on the surface of Ag60Cu26Zn14 and Ag58.5Cu31.5Pd10 brazing alloys",
volume = "38",
number = "2",
pages = "111-125",
doi = "10.1515/corrrev-2019-0067"
}

Dimitrijević, S. P., Vurdelja, B. D., Dimitrijević, S. B., Veljković, F. M., Kamberović, Ž.,& Veličković, S.. (2020). Complementary methods for characterization of the corrosion products on the surface of Ag60Cu26Zn14 and Ag58.5Cu31.5Pd10 brazing alloys. in Corrosion Reviews, 38(2), 111-125.
https://doi.org/10.1515/corrrev-2019-0067

Dimitrijević SP, Vurdelja BD, Dimitrijević SB, Veljković FM, Kamberović Ž, Veličković S. Complementary methods for characterization of the corrosion products on the surface of Ag60Cu26Zn14 and Ag58.5Cu31.5Pd10 brazing alloys. in Corrosion Reviews. 2020;38(2):111-125.
doi:10.1515/corrrev-2019-0067 .

Dimitrijević, Stevan P., Vurdelja, Borislava D., Dimitrijević, Silvana B., Veljković, Filip M., Kamberović, Željko, Veličković, Suzana, "Complementary methods for characterization of the corrosion products on the surface of Ag60Cu26Zn14 and Ag58.5Cu31.5Pd10 brazing alloys" in Corrosion Reviews, 38, no. 2 (2020):111-125,
https://doi.org/10.1515/corrrev-2019-0067 . .

TY  - THES
AU  - Živković, Sanja
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8854
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:22808/bdef:Content/download
UR  - https://plus.sr.cobiss.net/opac7/bib/23396873
UR  - https://nardus.mpn.gov.rs/handle/123456789/17524
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=7653
AB  - Спектроскопија ласерски индуковане плазме (LIBS) је аналитичка техника која омогућава брзу, мултиелементалну анализу свих врста материјала, најчешће без потребе за претходном припремом узорака, у реалном времену и на лицу места. Ова савремена метода хемијске анализе у складу је са принципима зелене аналитичке хемије јер не захтева употребу агресивних и потенцијално токсичних хемикалија. Примарни циљ ове дисертације је испитивање аналитичких могућности оригиналног лабораторијског LIBS система за квалитативну и квантитативну анализу различитих чврстих узорака, као што су металне легуре, геолошки узорци и прашкасти биљни узорци. Развијени LIBS систем користи зрачење ТЕА CO2 ласера за индуковање плазме, а за анализу зрачења плазме временски-интеграљену просторно-разложену спектроскопију. У циљу проналажења оптималних услова за спектрохемијску примену ласером индуковане плазме, испитан је утицај енергије ласерског зрачења, састава и притиска околног гаса, начина фокусирања и других параметара на карактеристике и спектралну емисију плазме. Развијен је начин припреме синтетичких стандарда за квантитативну анализу узорака код којих не постоје адекватни сертификовани референтни материјали. Такође, испитана је могућност примене методе стандардног додатка комбиноване са методама нормализације за побољшање тачности одређивања концентрације аналита. Сви резултати добијени LIBS методом потврђени су применом стандардне ICP-OES технике. Учешћем у 2. интерлабораторијском међународном LIBS поређењу показано је да је систем на бази ТЕА CO2 ласера по аналитичким перформансама у потпуности упоредив а за поједине елементе чак и бољи у односу на комерцијалне LIBS уређаје.
AB  - Laser-induced breakdown spectroscopy (LIBS) is an analytical technique for fast, multi-element analysis of any kind of material, most often without preliminary preparation, in real time and on-site. This modern analytical method is in accordance with the principles of green analytical chemistry because it does not require the use of aggressive and potentially toxic chemicals. The main aim of this thesis is to investigate the analytical capability of originally developed TEA CO2 based LIBS system, for qualitative and quantitative analysis of various types of solid samples (metal alloys, geological samples and powdered plant materials). In LIBS system, TEA CO2 laser irradiation was used for plasma generation while time-integrated spatially resolved spectroscopy was applied for the analysis of plasma radiation. In order to find optimal conditions for spectrochemical applications of laser induced plasma, the influence of laser irradiation energy, compositions and pressure of the ambient gas, focusing, etc., on spectral emission and characteristics of plasma was examined. A method for the preparation of synthetic standards for the quantitative analysis of samples, for which there are no adequate certified reference materials, has been developed. Also, the applicability of the method of standard addition combined with normalization methods for improving the accuracy of determining the analyte concentration was tested. Results obtained with developed LIBS method were verified with the standard method, ICP-OES. The applied system based on TEA CO2 laser according to analytical performances is fully comparable and for some elements even better than commercial LIBS devices, which is verified by participation in the 2nd interlaboratory international LIBS comparison.
PB  - Универзитет у Београду, Хемијски факултет
T2  - Универзитет у Београду
T1  - Примена спектроскопије плазме индуковане импулсним угљендиоксидним ласерским зрачењем за квалитативну и квантитативну анализу чврстих узорака
UR  - https://hdl.handle.net/21.15107/rcub_nardus_17524
ER  - 

@phdthesis{
author = "Živković, Sanja",
year = "2019",
abstract = "Спектроскопија ласерски индуковане плазме (LIBS) је аналитичка техника која омогућава брзу, мултиелементалну анализу свих врста материјала, најчешће без потребе за претходном припремом узорака, у реалном времену и на лицу места. Ова савремена метода хемијске анализе у складу је са принципима зелене аналитичке хемије јер не захтева употребу агресивних и потенцијално токсичних хемикалија. Примарни циљ ове дисертације је испитивање аналитичких могућности оригиналног лабораторијског LIBS система за квалитативну и квантитативну анализу различитих чврстих узорака, као што су металне легуре, геолошки узорци и прашкасти биљни узорци. Развијени LIBS систем користи зрачење ТЕА CO2 ласера за индуковање плазме, а за анализу зрачења плазме временски-интеграљену просторно-разложену спектроскопију. У циљу проналажења оптималних услова за спектрохемијску примену ласером индуковане плазме, испитан је утицај енергије ласерског зрачења, састава и притиска околног гаса, начина фокусирања и других параметара на карактеристике и спектралну емисију плазме. Развијен је начин припреме синтетичких стандарда за квантитативну анализу узорака код којих не постоје адекватни сертификовани референтни материјали. Такође, испитана је могућност примене методе стандардног додатка комбиноване са методама нормализације за побољшање тачности одређивања концентрације аналита. Сви резултати добијени LIBS методом потврђени су применом стандардне ICP-OES технике. Учешћем у 2. интерлабораторијском међународном LIBS поређењу показано је да је систем на бази ТЕА CO2 ласера по аналитичким перформансама у потпуности упоредив а за поједине елементе чак и бољи у односу на комерцијалне LIBS уређаје., Laser-induced breakdown spectroscopy (LIBS) is an analytical technique for fast, multi-element analysis of any kind of material, most often without preliminary preparation, in real time and on-site. This modern analytical method is in accordance with the principles of green analytical chemistry because it does not require the use of aggressive and potentially toxic chemicals. The main aim of this thesis is to investigate the analytical capability of originally developed TEA CO2 based LIBS system, for qualitative and quantitative analysis of various types of solid samples (metal alloys, geological samples and powdered plant materials). In LIBS system, TEA CO2 laser irradiation was used for plasma generation while time-integrated spatially resolved spectroscopy was applied for the analysis of plasma radiation. In order to find optimal conditions for spectrochemical applications of laser induced plasma, the influence of laser irradiation energy, compositions and pressure of the ambient gas, focusing, etc., on spectral emission and characteristics of plasma was examined. A method for the preparation of synthetic standards for the quantitative analysis of samples, for which there are no adequate certified reference materials, has been developed. Also, the applicability of the method of standard addition combined with normalization methods for improving the accuracy of determining the analyte concentration was tested. Results obtained with developed LIBS method were verified with the standard method, ICP-OES. The applied system based on TEA CO2 laser according to analytical performances is fully comparable and for some elements even better than commercial LIBS devices, which is verified by participation in the 2nd interlaboratory international LIBS comparison.",
publisher = "Универзитет у Београду, Хемијски факултет",
journal = "Универзитет у Београду",
title = "Примена спектроскопије плазме индуковане импулсним угљендиоксидним ласерским зрачењем за квалитативну и квантитативну анализу чврстих узорака",
url = "https://hdl.handle.net/21.15107/rcub_nardus_17524"
}

Živković, S.. (2019). Примена спектроскопије плазме индуковане импулсним угљендиоксидним ласерским зрачењем за квалитативну и квантитативну анализу чврстих узорака. in Универзитет у Београду
Универзитет у Београду, Хемијски факултет..
https://hdl.handle.net/21.15107/rcub_nardus_17524

Živković S. Примена спектроскопије плазме индуковане импулсним угљендиоксидним ласерским зрачењем за квалитативну и квантитативну анализу чврстих узорака. in Универзитет у Београду. 2019;.
https://hdl.handle.net/21.15107/rcub_nardus_17524 .

Živković, Sanja, "Примена спектроскопије плазме индуковане импулсним угљендиоксидним ласерским зрачењем за квалитативну и квантитативну анализу чврстих узорака" in Универзитет у Београду (2019),
https://hdl.handle.net/21.15107/rcub_nardus_17524 .

TY  - JOUR
AU  - Kuzmanović, Miroslav M.
AU  - Ranković, Dragan
AU  - Trtica, Milan
AU  - Ciganović, Jovan
AU  - Petrović, Jelena
AU  - Savović, Jelena
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0584854719300849
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8204
AB  - Optical emission studies of graphite plasma induced by infrared (IR) Transversely Excited Atmospheric carbon dioxide (TEA CO2) laser pulses in ambient air at atmospheric pressure are reported. The plasma was induced at relatively low-irradiance, up to 40 MW cm−2, and the plasma emission was recorded using time-integrated LIBS measurements. The time profile of the 160 mJ laser pulse is composed of a short, 100 ns long initial spike, and a long 2 μs tail. About 60 mJ is contained in the initial pulse, and the 100-mJ tail contribution is favorable for extended plasma absorption that promotes creation of long-lasting highly-excited plasma. With laser pulse focused behind the target surface, recorded spectra consisted of intensive, sharp atomic and single charged ionic spectral lines of carbon, and trace elements, e.g. Ca, Cu, V, Si, and Ti. Good signal to background ratios obtained indicate potential application in the analysis of impurities in graphite, and also elemental analysis of other materials with high carbon content. The average electron number density was determined from Stark-broadened emission profile of C I 247.9 nm line, and the line intensity ratio of CII 250.9 nm/C I 247.9 nm line pair was used for estimation of ionization temperature. Depending on the applied fluence, electron density was in the range 2.6–4.8 × 1017 cm−3, and ionization temperature between 19,000 and 22,000 K. Beside line spectra, intensive and well-developed band spectra of diatomic molecules C2 (Swan system), and CN (violet system) were obtained. Pulse energy threshold for observation of molecular emission was 50 mJ. From the spectroscopic studies of the emission bands, the rotational and vibrational temperatures were estimated by comparing the experimental and simulated emission spectra. Vibrational and rotational temperatures deduced from Δν = 0 sequences of the Swan system of C2 were 3100 K and 3850 K, respectively. The most intense band of the CN violet system showed strong self-absorption and led to overestimated temperature values, Tvib = Trot = 4900 K. © 2019 Elsevier B.V.
T2  - Spectrochimica Acta. Part B: Atomic Spectroscopy
T1  - Optical emission of graphite plasma generated in ambient air using low-irradiance carbon dioxide laser pulses
VL  - 157
SP  - 37
EP  - 46
DO  - 10.1016/j.sab.2019.05.006
ER  - 

@article{
author = "Kuzmanović, Miroslav M. and Ranković, Dragan and Trtica, Milan and Ciganović, Jovan and Petrović, Jelena and Savović, Jelena",
year = "2019",
abstract = "Optical emission studies of graphite plasma induced by infrared (IR) Transversely Excited Atmospheric carbon dioxide (TEA CO2) laser pulses in ambient air at atmospheric pressure are reported. The plasma was induced at relatively low-irradiance, up to 40 MW cm−2, and the plasma emission was recorded using time-integrated LIBS measurements. The time profile of the 160 mJ laser pulse is composed of a short, 100 ns long initial spike, and a long 2 μs tail. About 60 mJ is contained in the initial pulse, and the 100-mJ tail contribution is favorable for extended plasma absorption that promotes creation of long-lasting highly-excited plasma. With laser pulse focused behind the target surface, recorded spectra consisted of intensive, sharp atomic and single charged ionic spectral lines of carbon, and trace elements, e.g. Ca, Cu, V, Si, and Ti. Good signal to background ratios obtained indicate potential application in the analysis of impurities in graphite, and also elemental analysis of other materials with high carbon content. The average electron number density was determined from Stark-broadened emission profile of C I 247.9 nm line, and the line intensity ratio of CII 250.9 nm/C I 247.9 nm line pair was used for estimation of ionization temperature. Depending on the applied fluence, electron density was in the range 2.6–4.8 × 1017 cm−3, and ionization temperature between 19,000 and 22,000 K. Beside line spectra, intensive and well-developed band spectra of diatomic molecules C2 (Swan system), and CN (violet system) were obtained. Pulse energy threshold for observation of molecular emission was 50 mJ. From the spectroscopic studies of the emission bands, the rotational and vibrational temperatures were estimated by comparing the experimental and simulated emission spectra. Vibrational and rotational temperatures deduced from Δν = 0 sequences of the Swan system of C2 were 3100 K and 3850 K, respectively. The most intense band of the CN violet system showed strong self-absorption and led to overestimated temperature values, Tvib = Trot = 4900 K. © 2019 Elsevier B.V.",
journal = "Spectrochimica Acta. Part B: Atomic Spectroscopy",
title = "Optical emission of graphite plasma generated in ambient air using low-irradiance carbon dioxide laser pulses",
volume = "157",
pages = "37-46",
doi = "10.1016/j.sab.2019.05.006"
}

Kuzmanović, M. M., Ranković, D., Trtica, M., Ciganović, J., Petrović, J.,& Savović, J.. (2019). Optical emission of graphite plasma generated in ambient air using low-irradiance carbon dioxide laser pulses. in Spectrochimica Acta. Part B: Atomic Spectroscopy, 157, 37-46.
https://doi.org/10.1016/j.sab.2019.05.006

Kuzmanović MM, Ranković D, Trtica M, Ciganović J, Petrović J, Savović J. Optical emission of graphite plasma generated in ambient air using low-irradiance carbon dioxide laser pulses. in Spectrochimica Acta. Part B: Atomic Spectroscopy. 2019;157:37-46.
doi:10.1016/j.sab.2019.05.006 .

Kuzmanović, Miroslav M., Ranković, Dragan, Trtica, Milan, Ciganović, Jovan, Petrović, Jelena, Savović, Jelena, "Optical emission of graphite plasma generated in ambient air using low-irradiance carbon dioxide laser pulses" in Spectrochimica Acta. Part B: Atomic Spectroscopy, 157 (2019):37-46,
https://doi.org/10.1016/j.sab.2019.05.006 . .

TY  - JOUR
AU  - Momčilović, Miloš
AU  - Živković, Sanja
AU  - Petrović, Jelena
AU  - Cvijović-Alagić, Ivana
AU  - Ciganović, Jovan
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8620
AB  - This study was carried out to examine the applicability of original laser-induced breakdown spectroscopy (LIBS) setup for determination of the surface hardness of lead glass as a function of its chemical composition. For this purpose, a set of five lead glass samples with different amount of ZrO2 was prepared. The LIBS measurements were carried out using TEA CO2 laser in the air at atmospheric pressure and without sample preparation. A ratio of the intensity between the Zr(II) 355.66 nm and Zr(I) 360.12 nm emission lines has been used to examine the hardness of the material. In addition, the surface hardness of glass samples was determined by Vickers’s indentation tests. Obtained results indicate a linear relationship of the measurements of hardness in glass samples between the LIBS and Vickers method. To show that LIBS based on TEA CO2 laser is an almost nondestructive technique, profilometric surface analysis was used. The proposed LIBS system is suitable not only for a spectrochemical analysis but also as an easy to use and cost-effective way to measure the surface hardness for all types and shapes of glass samples which are in some cases difficult to examine by standard Vicker’s method. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
T2  - Applied Physics. B: Lasers and Optics
T1  - An original LIBS system based on TEA CO2 laser as a tool for determination of glass surface hardness
VL  - 125
IS  - 11
SP  - 222
DO  - 10.1007/s00340-019-7329-2
ER  - 

@article{
author = "Momčilović, Miloš and Živković, Sanja and Petrović, Jelena and Cvijović-Alagić, Ivana and Ciganović, Jovan",
year = "2019",
abstract = "This study was carried out to examine the applicability of original laser-induced breakdown spectroscopy (LIBS) setup for determination of the surface hardness of lead glass as a function of its chemical composition. For this purpose, a set of five lead glass samples with different amount of ZrO2 was prepared. The LIBS measurements were carried out using TEA CO2 laser in the air at atmospheric pressure and without sample preparation. A ratio of the intensity between the Zr(II) 355.66 nm and Zr(I) 360.12 nm emission lines has been used to examine the hardness of the material. In addition, the surface hardness of glass samples was determined by Vickers’s indentation tests. Obtained results indicate a linear relationship of the measurements of hardness in glass samples between the LIBS and Vickers method. To show that LIBS based on TEA CO2 laser is an almost nondestructive technique, profilometric surface analysis was used. The proposed LIBS system is suitable not only for a spectrochemical analysis but also as an easy to use and cost-effective way to measure the surface hardness for all types and shapes of glass samples which are in some cases difficult to examine by standard Vicker’s method. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.",
journal = "Applied Physics. B: Lasers and Optics",
title = "An original LIBS system based on TEA CO2 laser as a tool for determination of glass surface hardness",
volume = "125",
number = "11",
pages = "222",
doi = "10.1007/s00340-019-7329-2"
}

Momčilović, M., Živković, S., Petrović, J., Cvijović-Alagić, I.,& Ciganović, J.. (2019). An original LIBS system based on TEA CO2 laser as a tool for determination of glass surface hardness. in Applied Physics. B: Lasers and Optics, 125(11), 222.
https://doi.org/10.1007/s00340-019-7329-2

Momčilović M, Živković S, Petrović J, Cvijović-Alagić I, Ciganović J. An original LIBS system based on TEA CO2 laser as a tool for determination of glass surface hardness. in Applied Physics. B: Lasers and Optics. 2019;125(11):222.
doi:10.1007/s00340-019-7329-2 .

Momčilović, Miloš, Živković, Sanja, Petrović, Jelena, Cvijović-Alagić, Ivana, Ciganović, Jovan, "An original LIBS system based on TEA CO2 laser as a tool for determination of glass surface hardness" in Applied Physics. B: Lasers and Optics, 125, no. 11 (2019):222,
https://doi.org/10.1007/s00340-019-7329-2 . .

TY  - JOUR
AU  - Momčilović, Miloš
AU  - Živković, Sanja
AU  - Kuzmanović, Miroslav M.
AU  - Ciganović, Jovan
AU  - Ranković, Dragan
AU  - Trtica, Milan
AU  - Savović, Jelena
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8158
AB  - Time-integrated optical emission spectroscopy was applied for the analysis of emission spectra, and determination of electron densities and excitation temperatures of basalt plasma induced by 10.6 micron laser radiation. The plasma was studied in air, argon and carbon dioxide, under pressure of 10, 50, and 100 mbar. The plasma emission intensity was found to be strongly dependent on the nature of the ambient gas and its pressure. The highest emission intensities and signal to noise ratios were obtained in argon. Depending on the composition and pressure of the surrounding atmosphere, the values of plasma temperature varied between 14,400 K (air at 10 mbar) and 17,100 K (carbon dioxide at 100 mbar). Similarly, the electron number density varied between 3 × 1016 cm−3 (10 mbar air) and 1.6 × 1017 cm−3 (100 mbar CO2). The observed behavior was correlated with the properties of the studied gases, in particular, their mass, thermal conductivity and ionization energy, and the role of the ambient gas in controlling the efficiency of laser-target coupling, laser-plasma interaction and plasma shielding. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.
T2  - Plasma Chemistry and Plasma Processing
T1  - The Effect of Background Gas on the Excitation Temperature and Electron Number Density of Basalt Plasma Induced by 10.6 Micron Laser Radiation
VL  - 39
IS  - 4
SP  - 985
EP  - 1000
DO  - 10.1007/s11090-019-09987-4
ER  - 

@article{
author = "Momčilović, Miloš and Živković, Sanja and Kuzmanović, Miroslav M. and Ciganović, Jovan and Ranković, Dragan and Trtica, Milan and Savović, Jelena",
year = "2019",
abstract = "Time-integrated optical emission spectroscopy was applied for the analysis of emission spectra, and determination of electron densities and excitation temperatures of basalt plasma induced by 10.6 micron laser radiation. The plasma was studied in air, argon and carbon dioxide, under pressure of 10, 50, and 100 mbar. The plasma emission intensity was found to be strongly dependent on the nature of the ambient gas and its pressure. The highest emission intensities and signal to noise ratios were obtained in argon. Depending on the composition and pressure of the surrounding atmosphere, the values of plasma temperature varied between 14,400 K (air at 10 mbar) and 17,100 K (carbon dioxide at 100 mbar). Similarly, the electron number density varied between 3 × 1016 cm−3 (10 mbar air) and 1.6 × 1017 cm−3 (100 mbar CO2). The observed behavior was correlated with the properties of the studied gases, in particular, their mass, thermal conductivity and ionization energy, and the role of the ambient gas in controlling the efficiency of laser-target coupling, laser-plasma interaction and plasma shielding. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.",
journal = "Plasma Chemistry and Plasma Processing",
title = "The Effect of Background Gas on the Excitation Temperature and Electron Number Density of Basalt Plasma Induced by 10.6 Micron Laser Radiation",
volume = "39",
number = "4",
pages = "985-1000",
doi = "10.1007/s11090-019-09987-4"
}

Momčilović, M., Živković, S., Kuzmanović, M. M., Ciganović, J., Ranković, D., Trtica, M.,& Savović, J.. (2019). The Effect of Background Gas on the Excitation Temperature and Electron Number Density of Basalt Plasma Induced by 10.6 Micron Laser Radiation. in Plasma Chemistry and Plasma Processing, 39(4), 985-1000.
https://doi.org/10.1007/s11090-019-09987-4

Momčilović M, Živković S, Kuzmanović MM, Ciganović J, Ranković D, Trtica M, Savović J. The Effect of Background Gas on the Excitation Temperature and Electron Number Density of Basalt Plasma Induced by 10.6 Micron Laser Radiation. in Plasma Chemistry and Plasma Processing. 2019;39(4):985-1000.
doi:10.1007/s11090-019-09987-4 .

Momčilović, Miloš, Živković, Sanja, Kuzmanović, Miroslav M., Ciganović, Jovan, Ranković, Dragan, Trtica, Milan, Savović, Jelena, "The Effect of Background Gas on the Excitation Temperature and Electron Number Density of Basalt Plasma Induced by 10.6 Micron Laser Radiation" in Plasma Chemistry and Plasma Processing, 39, no. 4 (2019):985-1000,
https://doi.org/10.1007/s11090-019-09987-4 . .

TY  - JOUR
AU  - Milovanović, Branislav
AU  - Milovanović, Milan
AU  - Veličković, Suzana
AU  - Veljković, Filip M.
AU  - Perić-Grujić, Aleksandra A.
AU  - Jerosimić, Stanka
PY  - 2019
UR  - https://onlinelibrary.wiley.com/doi/abs/10.1002/qua.26009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8352
AB  - Small heterogeneous potassium-iodide clusters are investigated by means of ab initio electronic structural methods together with experimental production and detection in mass spectrometry. Experiments were done by using Knudsen cell mass spectrometry (KCMS) modification method, which provided simultaneous generating of all KnI0,+1 (n = 2–6) clusters at once. Clusters with more than two potassium atoms are produced for the first time. The lowest lying isomers of those KnI0,+1 (n = 2–6) clusters were found by using a random-kick procedure. The best description of growth of these clusters is the addition of one potassium atom to a smaller-neighbor cluster. Subsequently, stability of these species was examined. In spite of general trend of decreasing of binding energies, the closed-shell species have slightly larger stability with respect to the open-shell species. Alternation of dissociation energies between closed-shell and open-shell clusters is presented. Experimental setup also allows determination of ionization energies of clusters: the obtained values are in the range of 3.46–3.98 eV, which classify these clusters as “superalkali.” For closed-shell clusters, the theoretical adiabatic ionization energies are close to experimental values, whereas in the case of open-shell clusters, the vertical ionization energies are those that are close to experimental values. © 2019 Wiley Periodicals, Inc.
T2  - International Journal of Quantum Chemistry
T1  - Theoretical and experimental investigation of geometry and stability of small potassium‐iodide KnI(n=2–6) clusters
VL  - 119
IS  - 22
SP  - e26009
DO  - 10.1002/qua.26009
ER  - 

@article{
author = "Milovanović, Branislav and Milovanović, Milan and Veličković, Suzana and Veljković, Filip M. and Perić-Grujić, Aleksandra A. and Jerosimić, Stanka",
year = "2019",
abstract = "Small heterogeneous potassium-iodide clusters are investigated by means of ab initio electronic structural methods together with experimental production and detection in mass spectrometry. Experiments were done by using Knudsen cell mass spectrometry (KCMS) modification method, which provided simultaneous generating of all KnI0,+1 (n = 2–6) clusters at once. Clusters with more than two potassium atoms are produced for the first time. The lowest lying isomers of those KnI0,+1 (n = 2–6) clusters were found by using a random-kick procedure. The best description of growth of these clusters is the addition of one potassium atom to a smaller-neighbor cluster. Subsequently, stability of these species was examined. In spite of general trend of decreasing of binding energies, the closed-shell species have slightly larger stability with respect to the open-shell species. Alternation of dissociation energies between closed-shell and open-shell clusters is presented. Experimental setup also allows determination of ionization energies of clusters: the obtained values are in the range of 3.46–3.98 eV, which classify these clusters as “superalkali.” For closed-shell clusters, the theoretical adiabatic ionization energies are close to experimental values, whereas in the case of open-shell clusters, the vertical ionization energies are those that are close to experimental values. © 2019 Wiley Periodicals, Inc.",
journal = "International Journal of Quantum Chemistry",
title = "Theoretical and experimental investigation of geometry and stability of small potassium‐iodide KnI(n=2–6) clusters",
volume = "119",
number = "22",
pages = "e26009",
doi = "10.1002/qua.26009"
}

Milovanović, B., Milovanović, M., Veličković, S., Veljković, F. M., Perić-Grujić, A. A.,& Jerosimić, S.. (2019). Theoretical and experimental investigation of geometry and stability of small potassium‐iodide KnI(n=2–6) clusters. in International Journal of Quantum Chemistry, 119(22), e26009.
https://doi.org/10.1002/qua.26009

Milovanović B, Milovanović M, Veličković S, Veljković FM, Perić-Grujić AA, Jerosimić S. Theoretical and experimental investigation of geometry and stability of small potassium‐iodide KnI(n=2–6) clusters. in International Journal of Quantum Chemistry. 2019;119(22):e26009.
doi:10.1002/qua.26009 .

Milovanović, Branislav, Milovanović, Milan, Veličković, Suzana, Veljković, Filip M., Perić-Grujić, Aleksandra A., Jerosimić, Stanka, "Theoretical and experimental investigation of geometry and stability of small potassium‐iodide KnI(n=2–6) clusters" in International Journal of Quantum Chemistry, 119, no. 22 (2019):e26009,
https://doi.org/10.1002/qua.26009 . .

TY  - JOUR
AU  - Veljković, Filip M.
AU  - Vurdelja, Borislava D.
AU  - Rajčić, Boris
AU  - Veličković, Suzana
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8482
AB  - Abstract: In the present paper, ionization energies of LinCln – 1 (n = 3, 4, and 5) clusters were studied by means of the modified Knudsen cell mass spectrometry method, for the first time. The temperature dependence of the intensities of Li3Cl2 +, Li4Cl3 + and Li5Cl4 + ions were measured in the interval 1128–1616, 1126–1435, and 1947–2278 K, respectively. The following ionization energies were obtained: IE(Li3Cl2) = 4.51 ± 0.2 eV, IE(Li4Cl3) = 4.18 ± 0.2 eV, and IE(Li4Cl3) = 5.05 ± 0.2 eV. A good correlation of the experimental results with the theoretical adiabatic ionization energy is recognized. Results are confirmation that these clusters can be classified as “superalkalis.”. © 2019, Pleiades Publishing, Ltd.
T2  - Russian Journal of Physical Chemistry A
T1  - Ionization Energies of LinCln – 1 (n = 3, 4, and 5) Clusters Studied by the Modified Knudsen Cell Mass Spectrometry Method
VL  - 93
IS  - 13
SP  - 2699
EP  - 2702
DO  - 10.1134/S0036024419130302
ER  - 

@article{
author = "Veljković, Filip M. and Vurdelja, Borislava D. and Rajčić, Boris and Veličković, Suzana",
year = "2019",
abstract = "Abstract: In the present paper, ionization energies of LinCln – 1 (n = 3, 4, and 5) clusters were studied by means of the modified Knudsen cell mass spectrometry method, for the first time. The temperature dependence of the intensities of Li3Cl2 +, Li4Cl3 + and Li5Cl4 + ions were measured in the interval 1128–1616, 1126–1435, and 1947–2278 K, respectively. The following ionization energies were obtained: IE(Li3Cl2) = 4.51 ± 0.2 eV, IE(Li4Cl3) = 4.18 ± 0.2 eV, and IE(Li4Cl3) = 5.05 ± 0.2 eV. A good correlation of the experimental results with the theoretical adiabatic ionization energy is recognized. Results are confirmation that these clusters can be classified as “superalkalis.”. © 2019, Pleiades Publishing, Ltd.",
journal = "Russian Journal of Physical Chemistry A",
title = "Ionization Energies of LinCln – 1 (n = 3, 4, and 5) Clusters Studied by the Modified Knudsen Cell Mass Spectrometry Method",
volume = "93",
number = "13",
pages = "2699-2702",
doi = "10.1134/S0036024419130302"
}

Veljković, F. M., Vurdelja, B. D., Rajčić, B.,& Veličković, S.. (2019). Ionization Energies of LinCln – 1 (n = 3, 4, and 5) Clusters Studied by the Modified Knudsen Cell Mass Spectrometry Method. in Russian Journal of Physical Chemistry A, 93(13), 2699-2702.
https://doi.org/10.1134/S0036024419130302

Veljković FM, Vurdelja BD, Rajčić B, Veličković S. Ionization Energies of LinCln – 1 (n = 3, 4, and 5) Clusters Studied by the Modified Knudsen Cell Mass Spectrometry Method. in Russian Journal of Physical Chemistry A. 2019;93(13):2699-2702.
doi:10.1134/S0036024419130302 .

Veljković, Filip M., Vurdelja, Borislava D., Rajčić, Boris, Veličković, Suzana, "Ionization Energies of LinCln – 1 (n = 3, 4, and 5) Clusters Studied by the Modified Knudsen Cell Mass Spectrometry Method" in Russian Journal of Physical Chemistry A, 93, no. 13 (2019):2699-2702,
https://doi.org/10.1134/S0036024419130302 . .

TY  - JOUR
AU  - Trtica, Milan
AU  - Limpouch, Jiri
AU  - Stašić, Jelena
AU  - Gavrilov, Peter T.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0169433218324929
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7871
AB  - The present study deals with modification of tungsten surface with high-intensity (∼1015 W/cm2) femtosecond laser in air and vacuum surrounding. Specific findings include: (a) the applied intensities produce crater-like damages with depth ∼31.0 μm in vacuum and ∼7.2 μm in air; (b) peripheral region of the damages is diffuse in air atmosphere unlike vacuum where it is more sharply defined; (c) hydrodynamic features, while present in vacuum, are dramatically reduced in air; (d) characteristic chemical surface changes occur at the surface, and (e) plasma forms in front of the target in both surroundings. The obtained results imply that the employed intensities, in a certain sense, can be used for simulation of some processes in the fusion reactor and for highly precise material removal and tungsten surface processing (by fine tuning of given fs laser parameters). © 2018 Elsevier B.V.
T2  - Applied Surface Science
T1  - Femtosecond laser-assisted surface modification of tungsten with 1015 W/cm2 intensity in air and vacuum ambience
VL  - 464
SP  - 99
EP  - 107
DO  - 10.1016/j.apsusc.2018.09.074
ER  - 

@article{
author = "Trtica, Milan and Limpouch, Jiri and Stašić, Jelena and Gavrilov, Peter T.",
year = "2019",
abstract = "The present study deals with modification of tungsten surface with high-intensity (∼1015 W/cm2) femtosecond laser in air and vacuum surrounding. Specific findings include: (a) the applied intensities produce crater-like damages with depth ∼31.0 μm in vacuum and ∼7.2 μm in air; (b) peripheral region of the damages is diffuse in air atmosphere unlike vacuum where it is more sharply defined; (c) hydrodynamic features, while present in vacuum, are dramatically reduced in air; (d) characteristic chemical surface changes occur at the surface, and (e) plasma forms in front of the target in both surroundings. The obtained results imply that the employed intensities, in a certain sense, can be used for simulation of some processes in the fusion reactor and for highly precise material removal and tungsten surface processing (by fine tuning of given fs laser parameters). © 2018 Elsevier B.V.",
journal = "Applied Surface Science",
title = "Femtosecond laser-assisted surface modification of tungsten with 1015 W/cm2 intensity in air and vacuum ambience",
volume = "464",
pages = "99-107",
doi = "10.1016/j.apsusc.2018.09.074"
}

Trtica, M., Limpouch, J., Stašić, J.,& Gavrilov, P. T.. (2019). Femtosecond laser-assisted surface modification of tungsten with 1015 W/cm2 intensity in air and vacuum ambience. in Applied Surface Science, 464, 99-107.
https://doi.org/10.1016/j.apsusc.2018.09.074

Trtica M, Limpouch J, Stašić J, Gavrilov PT. Femtosecond laser-assisted surface modification of tungsten with 1015 W/cm2 intensity in air and vacuum ambience. in Applied Surface Science. 2019;464:99-107.
doi:10.1016/j.apsusc.2018.09.074 .

Trtica, Milan, Limpouch, Jiri, Stašić, Jelena, Gavrilov, Peter T., "Femtosecond laser-assisted surface modification of tungsten with 1015 W/cm2 intensity in air and vacuum ambience" in Applied Surface Science, 464 (2019):99-107,
https://doi.org/10.1016/j.apsusc.2018.09.074 . .

TY  - JOUR
AU  - Cvijović, Mirjana R.
AU  - Di Marco, Valerio
AU  - Stanković, Srboljub
AU  - Nedić, Zoran P.
AU  - Joksović, Ljubinka G.
AU  - Mihailović, Nevena R.
PY  - 2019
UR  - https://journals.matheo.si/index.php/ACSi/article/view/4468
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8088
AB  - Chlorpyrifos (CPS) is a toxic pesticide present in several pesticide formulations, with low degradability by natural processes. The degradation leads to the toxic metabolite chlorpyrifos-oxon (CPO). The analytical techniques used for the CPS and CPO analysis, like UPLC-PDA and GC-MS, are accurate but also expensive and time consuming, and they need sample pretreatment. In the search of a more rapid and simple analytical procedure, atmospheric solids analysis probe with mass spectrometry (ASAP-MS) was optimized for the determination of CPS and CPO in apples (Malus domestica „Idared”). The identification of the analytes was based on protonated ion and isotopic pattern, while the quantification was based on peak intensities. The obtained results were confirmed by re-validated UPLC-PDA and GC-MS techniques. CPS and CPO concentrations determined by ASAP-MS and UPLC-PDA showed moderate discrepancies (on average by 10–20%), thus demonstrating that ASAP-MS can be a semiquantitative tool for the quantification of these compounds. As additional goal of this work, the efficiency of a gamma irradiation treatment to remove CPS and CPO from apples was tested by analyzing their content before and after the irradiation: 89–99% of CPS and CPO were degraded with doses of 3.5–3.8 kGy and 66–72 h of irradiation per sample. Identical degradation results were obtained by UPLC-PDA and ASAP-MS, indicating that the latter technique is well suitable to rapidly check pesticide degradation in apples. © 2019 Slovensko Kemijsko Drustvo. All Rights Reserved.
T2  - Acta Chimica Slovenica
T1  - Atmospheric Solids Analysis Probe with Mass Spectrometry for Chlorpyrifos and Chlorpyrifos-Oxon Determination in Apples
VL  - 66
IS  - 1
SP  - 70
EP  - 77
DO  - 10.17344/acsi.2018.4468
ER  - 

@article{
author = "Cvijović, Mirjana R. and Di Marco, Valerio and Stanković, Srboljub and Nedić, Zoran P. and Joksović, Ljubinka G. and Mihailović, Nevena R.",
year = "2019",
abstract = "Chlorpyrifos (CPS) is a toxic pesticide present in several pesticide formulations, with low degradability by natural processes. The degradation leads to the toxic metabolite chlorpyrifos-oxon (CPO). The analytical techniques used for the CPS and CPO analysis, like UPLC-PDA and GC-MS, are accurate but also expensive and time consuming, and they need sample pretreatment. In the search of a more rapid and simple analytical procedure, atmospheric solids analysis probe with mass spectrometry (ASAP-MS) was optimized for the determination of CPS and CPO in apples (Malus domestica „Idared”). The identification of the analytes was based on protonated ion and isotopic pattern, while the quantification was based on peak intensities. The obtained results were confirmed by re-validated UPLC-PDA and GC-MS techniques. CPS and CPO concentrations determined by ASAP-MS and UPLC-PDA showed moderate discrepancies (on average by 10–20%), thus demonstrating that ASAP-MS can be a semiquantitative tool for the quantification of these compounds. As additional goal of this work, the efficiency of a gamma irradiation treatment to remove CPS and CPO from apples was tested by analyzing their content before and after the irradiation: 89–99% of CPS and CPO were degraded with doses of 3.5–3.8 kGy and 66–72 h of irradiation per sample. Identical degradation results were obtained by UPLC-PDA and ASAP-MS, indicating that the latter technique is well suitable to rapidly check pesticide degradation in apples. © 2019 Slovensko Kemijsko Drustvo. All Rights Reserved.",
journal = "Acta Chimica Slovenica",
title = "Atmospheric Solids Analysis Probe with Mass Spectrometry for Chlorpyrifos and Chlorpyrifos-Oxon Determination in Apples",
volume = "66",
number = "1",
pages = "70-77",
doi = "10.17344/acsi.2018.4468"
}

Cvijović, M. R., Di Marco, V., Stanković, S., Nedić, Z. P., Joksović, L. G.,& Mihailović, N. R.. (2019). Atmospheric Solids Analysis Probe with Mass Spectrometry for Chlorpyrifos and Chlorpyrifos-Oxon Determination in Apples. in Acta Chimica Slovenica, 66(1), 70-77.
https://doi.org/10.17344/acsi.2018.4468

Cvijović MR, Di Marco V, Stanković S, Nedić ZP, Joksović LG, Mihailović NR. Atmospheric Solids Analysis Probe with Mass Spectrometry for Chlorpyrifos and Chlorpyrifos-Oxon Determination in Apples. in Acta Chimica Slovenica. 2019;66(1):70-77.
doi:10.17344/acsi.2018.4468 .

Cvijović, Mirjana R., Di Marco, Valerio, Stanković, Srboljub, Nedić, Zoran P., Joksović, Ljubinka G., Mihailović, Nevena R., "Atmospheric Solids Analysis Probe with Mass Spectrometry for Chlorpyrifos and Chlorpyrifos-Oxon Determination in Apples" in Acta Chimica Slovenica, 66, no. 1 (2019):70-77,
https://doi.org/10.17344/acsi.2018.4468 . .

TY  - CONF
AU  - Momčilović, Miloš
AU  - Živković, Sanja
AU  - Savović, Jelena
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12694
AB  - Spektroskopija laserski indukovane plazme (Laser Induced Breakdown Spectroscopy, LIBS) je savremena metoda hemijske analize koja koristi optički signal iz laserski generisane plazme za proučavanje sastava materijala. LIBS se može koristiti za analizu uzoraka različite prirode i porekla zbog čega je našao primenu u brojnim oblastima [1]. U oblasti zaštite životne sredine LIBS je pogodan za brzu analizu opasnih metala i drugih zagađivača u vodi, zemljištu, biljkama, vazduhu, kao i za analizu otpada. Ono što posebno izdvaja LIBS od drugih spektrohemijskih metoda je mogućnost detekcije svih hemijskih elemenata iz periodnog sistema, uključujući i lake elemente (He, Li, Be, B, C, N, O...) koji se teško određuju drugim tehnikama, analiza čvrstih uzoraka bez potrebe za pripremom uzoraka, kao i mogućnost analize u realnom vremenu (in situ, stand-off, remote). Posebno treba istaći da se LIBS uklapa u koncept zelene analitičke hemije koja je prepoznata kao ključni deo zelene hemije [2]. Razvoj zelene analitičke hemije ima za cilj smanjenje negativnog uticaja hemijskih analiza na životnu sredinu. Najvažniji izazov za budućnost ove discipline jeste postizanje kompromisa između poboljšanja kvaliteta rezultata i povećanja ekološke prihvatljivosti analitičke metode. Danas, spektroskopske metode dominiraju u oblasti zelene analitičke hemije, a među njima posebno se, svojim karakteristikama i univerzalnošću, izdvaja LIBS. U najvećoj meri LIBS ispunjava postavljene principe zelene analitičke hemije koji razmatraju kompletan analitički proces koji uključuje uzorkovanje, pripremu, kao i sam proces analize uzoraka [2,3]. LIBS karakteriše velika fleksibilnost instrumentalne postavke. U zavisnosti od željene namene, optimizacija LIBS sistema može se postići izborom lasera određene energije, vremenskog trajanja laserskog impulsa (nanosekundni, pikosekundni, femtosekudni), kao i talasne dužine zračenja (ULJ, VID, IC). U praksi uobičajeno se koristi LIBS sistem koji se sastoji iz Nd:YAG lasera, spektrometra i detektora sa vremenskom rezolucijom. U okviru Laboratorije za fizičku hemiju INN Vinča razvijena je originalna LIBS aparatura koja se bazira na TEA (Transverzalno Ekscitovanom Atmosferskom) CO2 laseru, Slika 1. Ovaj kompaktni, impulsni, nanosekundni laser, koji je takođe kompletno konstruisan u INN Vinča, radi u visoko multimodnom režimu i emituje zračenje u infracrvenom delu spektra na 10,6 µm. Analitička primena laserski indukovane plazme zahteva optimizaciju, odnosno razdvajanje intenziteta kontinualnog zračenja od intenziteta linijske emisije analita u cilju postizanja zadovoljavajućih granica detekcije za posmatrani element. Za razliku od komercijalno dostupnih LIBS aparatura u kojima se koristi vremensko razlaganje signala, u ovoj eksperimentalnoj postavci optimizacija je postignuta alternativnom metodom, korišćenjem vremenski-integraljene prostorno-razložene laserske spektroskopije. Na ovaj način izbegnuto je korišćenje generatora kašnjenja i skupih iCCD detektora. Dosadašnja istraživanja vezana za analizu različitih tipova uzoraka pokazala su da je LIBS sistem koji koristi impulsni CO2  laser po analitičkim performansama (selektivnost, osetljivost, granice detekcije) u potpunosti uporedljiv sa komercijalnim LIBS uređajima, u odnosu na koje je naš sistem znatno kompaktniji, robusniji i ekonomski isplativiji [4-6]. Kompaktnost LIBS-a je posebno značajna jer manji broj komponenti olakšava konstrukciju prenosivog LIBS uredjaja. Tekuća istraživanja usmerena su na optimizaciju TEA CO2 LIBS-a za detekciju zagađenja vode i zemljišta teškim metalima.
PB  - Belgrade : Serbian Chemical Society
C3  - ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts
T1  - Razvoj originalne LIBS aparature na bazi TEA CO2 lasera za primenu u zelenoj analitičkoj hemiji
T1  - Development of the original LIBS apparatus based on TEA CO2 laser for application in the green analytical chemistry
SP  - 195
EP  - 196
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12694
ER  - 

@conference{
author = "Momčilović, Miloš and Živković, Sanja and Savović, Jelena",
year = "2018",
abstract = "Spektroskopija laserski indukovane plazme (Laser Induced Breakdown Spectroscopy, LIBS) je savremena metoda hemijske analize koja koristi optički signal iz laserski generisane plazme za proučavanje sastava materijala. LIBS se može koristiti za analizu uzoraka različite prirode i porekla zbog čega je našao primenu u brojnim oblastima [1]. U oblasti zaštite životne sredine LIBS je pogodan za brzu analizu opasnih metala i drugih zagađivača u vodi, zemljištu, biljkama, vazduhu, kao i za analizu otpada. Ono što posebno izdvaja LIBS od drugih spektrohemijskih metoda je mogućnost detekcije svih hemijskih elemenata iz periodnog sistema, uključujući i lake elemente (He, Li, Be, B, C, N, O...) koji se teško određuju drugim tehnikama, analiza čvrstih uzoraka bez potrebe za pripremom uzoraka, kao i mogućnost analize u realnom vremenu (in situ, stand-off, remote). Posebno treba istaći da se LIBS uklapa u koncept zelene analitičke hemije koja je prepoznata kao ključni deo zelene hemije [2]. Razvoj zelene analitičke hemije ima za cilj smanjenje negativnog uticaja hemijskih analiza na životnu sredinu. Najvažniji izazov za budućnost ove discipline jeste postizanje kompromisa između poboljšanja kvaliteta rezultata i povećanja ekološke prihvatljivosti analitičke metode. Danas, spektroskopske metode dominiraju u oblasti zelene analitičke hemije, a među njima posebno se, svojim karakteristikama i univerzalnošću, izdvaja LIBS. U najvećoj meri LIBS ispunjava postavljene principe zelene analitičke hemije koji razmatraju kompletan analitički proces koji uključuje uzorkovanje, pripremu, kao i sam proces analize uzoraka [2,3]. LIBS karakteriše velika fleksibilnost instrumentalne postavke. U zavisnosti od željene namene, optimizacija LIBS sistema može se postići izborom lasera određene energije, vremenskog trajanja laserskog impulsa (nanosekundni, pikosekundni, femtosekudni), kao i talasne dužine zračenja (ULJ, VID, IC). U praksi uobičajeno se koristi LIBS sistem koji se sastoji iz Nd:YAG lasera, spektrometra i detektora sa vremenskom rezolucijom. U okviru Laboratorije za fizičku hemiju INN Vinča razvijena je originalna LIBS aparatura koja se bazira na TEA (Transverzalno Ekscitovanom Atmosferskom) CO2 laseru, Slika 1. Ovaj kompaktni, impulsni, nanosekundni laser, koji je takođe kompletno konstruisan u INN Vinča, radi u visoko multimodnom režimu i emituje zračenje u infracrvenom delu spektra na 10,6 µm. Analitička primena laserski indukovane plazme zahteva optimizaciju, odnosno razdvajanje intenziteta kontinualnog zračenja od intenziteta linijske emisije analita u cilju postizanja zadovoljavajućih granica detekcije za posmatrani element. Za razliku od komercijalno dostupnih LIBS aparatura u kojima se koristi vremensko razlaganje signala, u ovoj eksperimentalnoj postavci optimizacija je postignuta alternativnom metodom, korišćenjem vremenski-integraljene prostorno-razložene laserske spektroskopije. Na ovaj način izbegnuto je korišćenje generatora kašnjenja i skupih iCCD detektora. Dosadašnja istraživanja vezana za analizu različitih tipova uzoraka pokazala su da je LIBS sistem koji koristi impulsni CO2  laser po analitičkim performansama (selektivnost, osetljivost, granice detekcije) u potpunosti uporedljiv sa komercijalnim LIBS uređajima, u odnosu na koje je naš sistem znatno kompaktniji, robusniji i ekonomski isplativiji [4-6]. Kompaktnost LIBS-a je posebno značajna jer manji broj komponenti olakšava konstrukciju prenosivog LIBS uredjaja. Tekuća istraživanja usmerena su na optimizaciju TEA CO2 LIBS-a za detekciju zagađenja vode i zemljišta teškim metalima.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts",
title = "Razvoj originalne LIBS aparature na bazi TEA CO2 lasera za primenu u zelenoj analitičkoj hemiji, Development of the original LIBS apparatus based on TEA CO2 laser for application in the green analytical chemistry",
pages = "195-196",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12694"
}

Momčilović, M., Živković, S.,& Savović, J.. (2018). Razvoj originalne LIBS aparature na bazi TEA CO2 lasera za primenu u zelenoj analitičkoj hemiji. in ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts
Belgrade : Serbian Chemical Society., 195-196.
https://hdl.handle.net/21.15107/rcub_vinar_12694

Momčilović M, Živković S, Savović J. Razvoj originalne LIBS aparature na bazi TEA CO2 lasera za primenu u zelenoj analitičkoj hemiji. in ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts. 2018;:195-196.
https://hdl.handle.net/21.15107/rcub_vinar_12694 .

Momčilović, Miloš, Živković, Sanja, Savović, Jelena, "Razvoj originalne LIBS aparature na bazi TEA CO2 lasera za primenu u zelenoj analitičkoj hemiji" in ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts (2018):195-196,
https://hdl.handle.net/21.15107/rcub_vinar_12694 .

TY  - JOUR
AU  - Petrović, Suzana
AU  - Gaković, Biljana M.
AU  - Panjan, Peter
AU  - Kovač, Janez
AU  - Lazović, Vladimir M.
AU  - Ristoscu, Carmen
AU  - Negut, Irina
AU  - Mihailescu, Ion N.
PY  - 2018
UR  - http://link.springer.com/10.1007/s11082-018-1475-3
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7686
AB  - The oxidation behaviour and morphological modification of CrN/(Cr,V)N coatings on Si wafers were studied after UV nanosecond laser (wavelength 248 nm, pulse duration 25 ns) processing in ambient air. The evolution of the surface composition and microstructure with the number of accumulated/subsequent pulses was systematically analysed depending on the initial content of vanadium in the as-deposited coatings. Irradiation of CrN/(Cr,V)N coatings with different content of vanadium was carried out at a fluence of 0.17 J cm−2with different number of pulses. The concentration of metallic components was fairly homogeneous distributed throughout the sample. However, on surface and in sub-surface regions the contents of Cr and V are diminished due to laser-induced oxidation. The composition and thickness of forming oxides mixture, Cr2O3and V2O5, are depending on the number of applied laser pulses and the initial vanadium content. The asymmetric progress of surface morphology is characterized by the formation of grainy structures at peripheries and the appearance of cracks and irregular closed shapes in the centre of the irradiation area.
T2  - Optical and Quantum Electronics
T1  - Oxidation behaviour of composite CrN/(Cr,V)N coatings with different contents of vanadium induced by UV nanosecond laser pulses
VL  - 50
IS  - 5
SP  - 208
DO  - 10.1007/s11082-018-1475-3
ER  - 

@article{
author = "Petrović, Suzana and Gaković, Biljana M. and Panjan, Peter and Kovač, Janez and Lazović, Vladimir M. and Ristoscu, Carmen and Negut, Irina and Mihailescu, Ion N.",
year = "2018",
abstract = "The oxidation behaviour and morphological modification of CrN/(Cr,V)N coatings on Si wafers were studied after UV nanosecond laser (wavelength 248 nm, pulse duration 25 ns) processing in ambient air. The evolution of the surface composition and microstructure with the number of accumulated/subsequent pulses was systematically analysed depending on the initial content of vanadium in the as-deposited coatings. Irradiation of CrN/(Cr,V)N coatings with different content of vanadium was carried out at a fluence of 0.17 J cm−2with different number of pulses. The concentration of metallic components was fairly homogeneous distributed throughout the sample. However, on surface and in sub-surface regions the contents of Cr and V are diminished due to laser-induced oxidation. The composition and thickness of forming oxides mixture, Cr2O3and V2O5, are depending on the number of applied laser pulses and the initial vanadium content. The asymmetric progress of surface morphology is characterized by the formation of grainy structures at peripheries and the appearance of cracks and irregular closed shapes in the centre of the irradiation area.",
journal = "Optical and Quantum Electronics",
title = "Oxidation behaviour of composite CrN/(Cr,V)N coatings with different contents of vanadium induced by UV nanosecond laser pulses",
volume = "50",
number = "5",
pages = "208",
doi = "10.1007/s11082-018-1475-3"
}

Petrović, S., Gaković, B. M., Panjan, P., Kovač, J., Lazović, V. M., Ristoscu, C., Negut, I.,& Mihailescu, I. N.. (2018). Oxidation behaviour of composite CrN/(Cr,V)N coatings with different contents of vanadium induced by UV nanosecond laser pulses. in Optical and Quantum Electronics, 50(5), 208.
https://doi.org/10.1007/s11082-018-1475-3

Petrović S, Gaković BM, Panjan P, Kovač J, Lazović VM, Ristoscu C, Negut I, Mihailescu IN. Oxidation behaviour of composite CrN/(Cr,V)N coatings with different contents of vanadium induced by UV nanosecond laser pulses. in Optical and Quantum Electronics. 2018;50(5):208.
doi:10.1007/s11082-018-1475-3 .

Petrović, Suzana, Gaković, Biljana M., Panjan, Peter, Kovač, Janez, Lazović, Vladimir M., Ristoscu, Carmen, Negut, Irina, Mihailescu, Ion N., "Oxidation behaviour of composite CrN/(Cr,V)N coatings with different contents of vanadium induced by UV nanosecond laser pulses" in Optical and Quantum Electronics, 50, no. 5 (2018):208,
https://doi.org/10.1007/s11082-018-1475-3 . .

TY  - CONF
AU  - Tošić, Miloš
AU  - Nikolić, Željka
AU  - Georgijević, Jelena M.
AU  - Brdarić, Tanja
AU  - Tasić, Gvozden
AU  - Nikolić, Vladimir
AU  - Milovanović, Dubravka
AU  - Marčeta Kaninski, Milica
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12695
AB  - BTEX jedinjenja su lako isparlјiva aromatična jedinjenja, klasifikovana kao toksična jedinjenja i kao takva su opasna po zdravlje ljudii životnu sredinu. Predmet istraživanja u ovom radu su BTEX jedinjenja u uzorcima građevinskog materijala sa mineralnim uljima kao glavnom komponentom. S obzirom da su ona sastavni deo mineralnih ulja, važno je odrediti njihovo prisustvo, koncentraciju i dalju distribuciju u životnu sredinu. Tokom eksperimentalnog istraživanja, ispitivan je sadržaj BTEX jedinjenja: benzen, toluen, ksilen (o, p, m) i etilbenzen u uzorcima mineralnih ulja iz građevinskih materijala i otpada. Metoda za određivanje ovih jedinjenja, kao i za njihovu kvantifikaciju u uzorcima mineralnih ulja, razvijena je u Laboratoriji za fizičku hemiju, Instituta za nuklearne nauke „Vinča“, Univerziteta u Beogradu, modifikacijom i unapređenjem standardnih metoda[1, 2]. Za potrebe ovog istraživanja,u eksperimentalnom delu, primenom Headspace ekstrakcije sa GC-FID tehnikom, određen je kvalitativni i kvantitativni sadržaj BTEX jedinjenja, što istovremeno predstavlja i validaciju ispitivane metode, kao i određivanje njene merne nesigurnosti (Tabela 1.).Parametri za validaciju ove metode su bili: specifičnost, linearnost, granica detekcije (LOD), granica kvantifikacije (LOQ), ponovljivost i tačnost svakog jedinjenja. Primenom opisane metode postignuta je pouzdana identifikacija ispitivanih jedinjenja. Identifikacija se ostvaruje poređenjem retencionih vremena ispitivanih jedinjenja sa retencionim vremenima analitičkih standarda. FID detektor pokazuje linearan odgovor u opsegu 0,1 do 10 µg , odnosno R ≥ 0,99. Vrednosti standarda na kalibracionoj krivi su potvrdili preciznost metode. Relativna standardna devijacija RSD je ispod 5%, što dokazuje da je metoda tačna i reproduktivna [3-8]. Predstavljena metoda je validirana kao pouzdana, precizna i tačna za potrebe kontrole kvaliteta mineralnih ulja koja su korišćena ili će se koristiti u toku izgradnje građevinskih objekata, kao i za otpadni materijal.
PB  - Belgrade : Serbian Chemical Society
C3  - ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts
T1  - Određivanja sadržaja BTEX jedinjenja u uzorcima građevinskog materijala i otpada sa mineralnim uljima kao glavnom komponentom, metodom GC/FID Headspace
T1  - Determination of the BTEX compounds in building materials and waste samples containing mineral oils as the main component using Headspace GC/FID
SP  - 203
EP  - 204
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12695
ER  - 

@conference{
author = "Tošić, Miloš and Nikolić, Željka and Georgijević, Jelena M. and Brdarić, Tanja and Tasić, Gvozden and Nikolić, Vladimir and Milovanović, Dubravka and Marčeta Kaninski, Milica",
year = "2018",
abstract = "BTEX jedinjenja su lako isparlјiva aromatična jedinjenja, klasifikovana kao toksična jedinjenja i kao takva su opasna po zdravlje ljudii životnu sredinu. Predmet istraživanja u ovom radu su BTEX jedinjenja u uzorcima građevinskog materijala sa mineralnim uljima kao glavnom komponentom. S obzirom da su ona sastavni deo mineralnih ulja, važno je odrediti njihovo prisustvo, koncentraciju i dalju distribuciju u životnu sredinu. Tokom eksperimentalnog istraživanja, ispitivan je sadržaj BTEX jedinjenja: benzen, toluen, ksilen (o, p, m) i etilbenzen u uzorcima mineralnih ulja iz građevinskih materijala i otpada. Metoda za određivanje ovih jedinjenja, kao i za njihovu kvantifikaciju u uzorcima mineralnih ulja, razvijena je u Laboratoriji za fizičku hemiju, Instituta za nuklearne nauke „Vinča“, Univerziteta u Beogradu, modifikacijom i unapređenjem standardnih metoda[1, 2]. Za potrebe ovog istraživanja,u eksperimentalnom delu, primenom Headspace ekstrakcije sa GC-FID tehnikom, određen je kvalitativni i kvantitativni sadržaj BTEX jedinjenja, što istovremeno predstavlja i validaciju ispitivane metode, kao i određivanje njene merne nesigurnosti (Tabela 1.).Parametri za validaciju ove metode su bili: specifičnost, linearnost, granica detekcije (LOD), granica kvantifikacije (LOQ), ponovljivost i tačnost svakog jedinjenja. Primenom opisane metode postignuta je pouzdana identifikacija ispitivanih jedinjenja. Identifikacija se ostvaruje poređenjem retencionih vremena ispitivanih jedinjenja sa retencionim vremenima analitičkih standarda. FID detektor pokazuje linearan odgovor u opsegu 0,1 do 10 µg , odnosno R ≥ 0,99. Vrednosti standarda na kalibracionoj krivi su potvrdili preciznost metode. Relativna standardna devijacija RSD je ispod 5%, što dokazuje da je metoda tačna i reproduktivna [3-8]. Predstavljena metoda je validirana kao pouzdana, precizna i tačna za potrebe kontrole kvaliteta mineralnih ulja koja su korišćena ili će se koristiti u toku izgradnje građevinskih objekata, kao i za otpadni materijal.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts",
title = "Određivanja sadržaja BTEX jedinjenja u uzorcima građevinskog materijala i otpada sa mineralnim uljima kao glavnom komponentom, metodom GC/FID Headspace, Determination of the BTEX compounds in building materials and waste samples containing mineral oils as the main component using Headspace GC/FID",
pages = "203-204",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12695"
}

Tošić, M., Nikolić, Ž., Georgijević, J. M., Brdarić, T., Tasić, G., Nikolić, V., Milovanović, D.,& Marčeta Kaninski, M.. (2018). Određivanja sadržaja BTEX jedinjenja u uzorcima građevinskog materijala i otpada sa mineralnim uljima kao glavnom komponentom, metodom GC/FID Headspace. in ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts
Belgrade : Serbian Chemical Society., 203-204.
https://hdl.handle.net/21.15107/rcub_vinar_12695

Tošić M, Nikolić Ž, Georgijević JM, Brdarić T, Tasić G, Nikolić V, Milovanović D, Marčeta Kaninski M. Određivanja sadržaja BTEX jedinjenja u uzorcima građevinskog materijala i otpada sa mineralnim uljima kao glavnom komponentom, metodom GC/FID Headspace. in ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts. 2018;:203-204.
https://hdl.handle.net/21.15107/rcub_vinar_12695 .

Tošić, Miloš, Nikolić, Željka, Georgijević, Jelena M., Brdarić, Tanja, Tasić, Gvozden, Nikolić, Vladimir, Milovanović, Dubravka, Marčeta Kaninski, Milica, "Određivanja sadržaja BTEX jedinjenja u uzorcima građevinskog materijala i otpada sa mineralnim uljima kao glavnom komponentom, metodom GC/FID Headspace" in ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts (2018):203-204,
https://hdl.handle.net/21.15107/rcub_vinar_12695 .

TY  - JOUR
AU  - Živković, Sanja
AU  - Savović, Jelena
AU  - Kuzmanović, Miroslav M.
AU  - Petrović, Jelena
AU  - Momčilović, Miloš
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1940
AB  - In this study, analytical capability of Laser Induced Breakdown Spectroscopy (LIBS) system based on Transversely Excited Atmospheric pressure (TEA) CO2 laser for determination of elemental composition of tea samples was demonstrated. Analysis of LIBS spectra indicated emission lines attributed to the elements Fe, Mg, Cu, Ca, Al, Mn, Ba, P, K and Sr. For quantitative analysis of Mn and Ba, a standard addition method was employed. Linear calibration curves with regression coefficients exceeding 0.95 were obtained. The accuracy of LIBS results was confirmed by inductively coupled plasma optical emission spectroscopy (ICP-OES) analysis. Calculated recoveries for Ba and Mn were 99.7 and 102.3%, respectively. The results presented confirm the suitability of the proposed LIBS setup for rapid quantitative analysis of tea, while at the same time simplifying the overall analytical procedure. This approach can be easily used as a helpful analytical tool for food quality and safety control. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Microchemical Journal
T1  - Alternative analytical method for direct determination of Mn and Ba in peppermint tea based on laser induced breakdown spectroscopy
VL  - 137
SP  - 410
EP  - 417
DO  - 10.1016/j.microc.2017.11.020
ER  - 

@article{
author = "Živković, Sanja and Savović, Jelena and Kuzmanović, Miroslav M. and Petrović, Jelena and Momčilović, Miloš",
year = "2018",
abstract = "In this study, analytical capability of Laser Induced Breakdown Spectroscopy (LIBS) system based on Transversely Excited Atmospheric pressure (TEA) CO2 laser for determination of elemental composition of tea samples was demonstrated. Analysis of LIBS spectra indicated emission lines attributed to the elements Fe, Mg, Cu, Ca, Al, Mn, Ba, P, K and Sr. For quantitative analysis of Mn and Ba, a standard addition method was employed. Linear calibration curves with regression coefficients exceeding 0.95 were obtained. The accuracy of LIBS results was confirmed by inductively coupled plasma optical emission spectroscopy (ICP-OES) analysis. Calculated recoveries for Ba and Mn were 99.7 and 102.3%, respectively. The results presented confirm the suitability of the proposed LIBS setup for rapid quantitative analysis of tea, while at the same time simplifying the overall analytical procedure. This approach can be easily used as a helpful analytical tool for food quality and safety control. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Microchemical Journal",
title = "Alternative analytical method for direct determination of Mn and Ba in peppermint tea based on laser induced breakdown spectroscopy",
volume = "137",
pages = "410-417",
doi = "10.1016/j.microc.2017.11.020"
}

Živković, S., Savović, J., Kuzmanović, M. M., Petrović, J.,& Momčilović, M.. (2018). Alternative analytical method for direct determination of Mn and Ba in peppermint tea based on laser induced breakdown spectroscopy. in Microchemical Journal, 137, 410-417.
https://doi.org/10.1016/j.microc.2017.11.020

Živković S, Savović J, Kuzmanović MM, Petrović J, Momčilović M. Alternative analytical method for direct determination of Mn and Ba in peppermint tea based on laser induced breakdown spectroscopy. in Microchemical Journal. 2018;137:410-417.
doi:10.1016/j.microc.2017.11.020 .

Živković, Sanja, Savović, Jelena, Kuzmanović, Miroslav M., Petrović, Jelena, Momčilović, Miloš, "Alternative analytical method for direct determination of Mn and Ba in peppermint tea based on laser induced breakdown spectroscopy" in Microchemical Journal, 137 (2018):410-417,
https://doi.org/10.1016/j.microc.2017.11.020 . .

TY  - JOUR
AU  - Trtica, Milan
AU  - Radak, Bojan
AU  - Milovanović, Dubravka S.
AU  - Kuzmanović, Miroslav M.
AU  - Savović, Jelena
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7809
AB  - Among numerous existing and developing techniques for the detection of air pollution, laser-based optical methods (LBM) are possibly the most promising ones. Unique sensing capabilities of LBM include high speed of analysis, high selectivity, sensitivity and accuracy, low detection limits, and remote detection. This paper gives a brief review of several laser-based systems for optical sensing of gas-phase chemical agents: laser intra-cavity, photoacoustic and laser-induced breakdown spectroscopy, and remote sensing based on differential absorption. For each method, a brief description of the principles of operation is given, and its analytical capabilities are outlined.
T2  - The European Physical Journal Plus
T1  - Laser-based optical techniques for the detection of chemical agents
VL  - 133
IS  - 7
SP  - 268
DO  - 10.1140/epjp/i2018-12145-4
ER  - 

@article{
author = "Trtica, Milan and Radak, Bojan and Milovanović, Dubravka S. and Kuzmanović, Miroslav M. and Savović, Jelena",
year = "2018",
abstract = "Among numerous existing and developing techniques for the detection of air pollution, laser-based optical methods (LBM) are possibly the most promising ones. Unique sensing capabilities of LBM include high speed of analysis, high selectivity, sensitivity and accuracy, low detection limits, and remote detection. This paper gives a brief review of several laser-based systems for optical sensing of gas-phase chemical agents: laser intra-cavity, photoacoustic and laser-induced breakdown spectroscopy, and remote sensing based on differential absorption. For each method, a brief description of the principles of operation is given, and its analytical capabilities are outlined.",
journal = "The European Physical Journal Plus",
title = "Laser-based optical techniques for the detection of chemical agents",
volume = "133",
number = "7",
pages = "268",
doi = "10.1140/epjp/i2018-12145-4"
}

Trtica, M., Radak, B., Milovanović, D. S., Kuzmanović, M. M.,& Savović, J.. (2018). Laser-based optical techniques for the detection of chemical agents. in The European Physical Journal Plus, 133(7), 268.
https://doi.org/10.1140/epjp/i2018-12145-4

Trtica M, Radak B, Milovanović DS, Kuzmanović MM, Savović J. Laser-based optical techniques for the detection of chemical agents. in The European Physical Journal Plus. 2018;133(7):268.
doi:10.1140/epjp/i2018-12145-4 .

Trtica, Milan, Radak, Bojan, Milovanović, Dubravka S., Kuzmanović, Miroslav M., Savović, Jelena, "Laser-based optical techniques for the detection of chemical agents" in The European Physical Journal Plus, 133, no. 7 (2018):268,
https://doi.org/10.1140/epjp/i2018-12145-4 . .

TY  - CONF
AU  - Veljković, Filip
AU  - Rajčić, Boris
AU  - Veličković, Suzana
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11395
AB  - Jedinjenja hlorata i perhlorata koja se koriste kao herbicidi, pogonska čvrsta goriva i eksplozivi, i sve češće se prepoznaju kao zagađivači podzemnih voda [1]. Perhlorati su posebno opasni jer ometaju proizvodnju hormona u štitnoj žlezdi. Hlor je podložan izotopskom frakcionisanju fizičkim i hemijskim procesima. Varijacije u atomskim masama, kao i u zastupljenosti izotopa hlora su posledica njegovog izotopskog frakcionisanja tokom fizičkih, hemijskih i bioloških procesa. Upravo, te varijacije su korisne za određivanje porekla supstance i proučavanje ekoloških, hidroloških i geoloških procesa. Takođe, analizom izotopa hlora može se utvrditi i priroda zagađivača životne sredine odnosno da li je njegovo poreklo antropogeno ili ne. Informacije mogu biti važne iz pravnih razloga i za remedijaciju kontaminiranog područja [2, 3]. Hlor se u prirodi javlja u obliku dva stabilna izotopa 35Cl i 37Cl (relativnih atomskih masa, respektivno 34,968 8527 i 36,965 9026), čiji relativni izotopski sastav je 0,7553 i 0,2547 [4]. Merenje odnosa stabilnih izotopa hlora (n(37Cl)/n(35Cl)), kao i molske frakcije 36Cl (n(36Cl)/n(Cl)) pruža korisne informacije o poreklu hlorata i perhlorata u okruženju [2, 3]. Ranija merenja promene odnosa stabilnih izotopa hlora rađena su pomoću magnetnog masenog spektrometra sa površinskom jonizacijom u negativnom modu direktnim praćenjem jona Cl-  [5], ili određivanjem promena izotopskog sastava praćenjem jona jedinjenja CH3 Cl+ [6]. Danas se metodom površinske jonizacije radi ispitivanja izotopskog sastava ne prate direktno joni hlora, već jedinjenja kao što su „superalkalni” klasteri tipa M2 Cl+  (M-alkalni metali). Razlog je, vrlo niska energija jonizacije pomenutih klastera (u nekim slučajevima niža od energije jonizacije cezijuma) što omogućava njihovu vrlo jednostavnu detekciju u masenom spektru [7]. Iako je ova metoda precizna i pouzdana, vrlo je skupa. Broj analiza izotopa hlora pomoću ugljovodonika koji u sastavu imaju hlor kao što je trihloretilen je u porastu, jer su ove vrste važni zagađivači životne sredine. Analiza kontinuiranog protoka trihloretilena molekula, bilo gasnom hromatografijom/izotopskom masenom spektrometrijom (GC/IRMS) ili sa masenom spektrometrijom GC/kvadrupol (GC/qMS), je inovativno analitičko rešenje, ali uprkos ranijim implementacijama, nedostaje joj rutinska aplikacija [8]. Pored navedenih tehnika u površinske metode jonizacije spada i masenospektrometrijska metoda laserske desorpcije i jonizacije (LDI). Preliminarni rezultati ukazuju da se „superalkalni“ klasteri tipa M2 Cl+ mogu detektovati navedenom metodom. S obzirom na jednostavnost korišćenja i njenu ekonomsku isplatljivost, analiza i ispitivanje promene izotopskog sastava pomoću LDI metode može predstavljati važan korak u analitici
PB  - Belgrade : Serbian Chemical Society
C3  - ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts
T1  - Metode površinske jonizacije za merenje izotopskog sastava hlora
T1  - Methods of surface ionization for the measurement of chlorine’s isotopic composition
SP  - 157
EP  - 158
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11395
ER  - 

@conference{
author = "Veljković, Filip and Rajčić, Boris and Veličković, Suzana",
year = "2018",
abstract = "Jedinjenja hlorata i perhlorata koja se koriste kao herbicidi, pogonska čvrsta goriva i eksplozivi, i sve češće se prepoznaju kao zagađivači podzemnih voda [1]. Perhlorati su posebno opasni jer ometaju proizvodnju hormona u štitnoj žlezdi. Hlor je podložan izotopskom frakcionisanju fizičkim i hemijskim procesima. Varijacije u atomskim masama, kao i u zastupljenosti izotopa hlora su posledica njegovog izotopskog frakcionisanja tokom fizičkih, hemijskih i bioloških procesa. Upravo, te varijacije su korisne za određivanje porekla supstance i proučavanje ekoloških, hidroloških i geoloških procesa. Takođe, analizom izotopa hlora može se utvrditi i priroda zagađivača životne sredine odnosno da li je njegovo poreklo antropogeno ili ne. Informacije mogu biti važne iz pravnih razloga i za remedijaciju kontaminiranog područja [2, 3]. Hlor se u prirodi javlja u obliku dva stabilna izotopa 35Cl i 37Cl (relativnih atomskih masa, respektivno 34,968 8527 i 36,965 9026), čiji relativni izotopski sastav je 0,7553 i 0,2547 [4]. Merenje odnosa stabilnih izotopa hlora (n(37Cl)/n(35Cl)), kao i molske frakcije 36Cl (n(36Cl)/n(Cl)) pruža korisne informacije o poreklu hlorata i perhlorata u okruženju [2, 3]. Ranija merenja promene odnosa stabilnih izotopa hlora rađena su pomoću magnetnog masenog spektrometra sa površinskom jonizacijom u negativnom modu direktnim praćenjem jona Cl-  [5], ili određivanjem promena izotopskog sastava praćenjem jona jedinjenja CH3 Cl+ [6]. Danas se metodom površinske jonizacije radi ispitivanja izotopskog sastava ne prate direktno joni hlora, već jedinjenja kao što su „superalkalni” klasteri tipa M2 Cl+  (M-alkalni metali). Razlog je, vrlo niska energija jonizacije pomenutih klastera (u nekim slučajevima niža od energije jonizacije cezijuma) što omogućava njihovu vrlo jednostavnu detekciju u masenom spektru [7]. Iako je ova metoda precizna i pouzdana, vrlo je skupa. Broj analiza izotopa hlora pomoću ugljovodonika koji u sastavu imaju hlor kao što je trihloretilen je u porastu, jer su ove vrste važni zagađivači životne sredine. Analiza kontinuiranog protoka trihloretilena molekula, bilo gasnom hromatografijom/izotopskom masenom spektrometrijom (GC/IRMS) ili sa masenom spektrometrijom GC/kvadrupol (GC/qMS), je inovativno analitičko rešenje, ali uprkos ranijim implementacijama, nedostaje joj rutinska aplikacija [8]. Pored navedenih tehnika u površinske metode jonizacije spada i masenospektrometrijska metoda laserske desorpcije i jonizacije (LDI). Preliminarni rezultati ukazuju da se „superalkalni“ klasteri tipa M2 Cl+ mogu detektovati navedenom metodom. S obzirom na jednostavnost korišćenja i njenu ekonomsku isplatljivost, analiza i ispitivanje promene izotopskog sastava pomoću LDI metode može predstavljati važan korak u analitici",
publisher = "Belgrade : Serbian Chemical Society",
journal = "ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts",
title = "Metode površinske jonizacije za merenje izotopskog sastava hlora, Methods of surface ionization for the measurement of chlorine’s isotopic composition",
pages = "157-158",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11395"
}

Veljković, F., Rajčić, B.,& Veličković, S.. (2018). Metode površinske jonizacije za merenje izotopskog sastava hlora. in ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts
Belgrade : Serbian Chemical Society., 157-158.
https://hdl.handle.net/21.15107/rcub_vinar_11395

Veljković F, Rajčić B, Veličković S. Metode površinske jonizacije za merenje izotopskog sastava hlora. in ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts. 2018;:157-158.
https://hdl.handle.net/21.15107/rcub_vinar_11395 .

Veljković, Filip, Rajčić, Boris, Veličković, Suzana, "Metode površinske jonizacije za merenje izotopskog sastava hlora" in ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts (2018):157-158,
https://hdl.handle.net/21.15107/rcub_vinar_11395 .

TY  - JOUR
AU  - Trtica, Milan
AU  - Stašić, Jelena
AU  - Batani, Dimitri
AU  - Benocci, R.
AU  - Narayanan, V.
AU  - Ciganović, Jovan
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1828
AB  - A study of the surface modification of titanium CP grade 2 implant/target with high intensity picosecond (Nd:YAG) laser, operating at 1064 nm wavelength and pulse duration of 40 ps, in gaseous (air) and liquid (water) medium, is presented. The exposure of Ti to a laser pulse energy of 17 mJ in both media - gaseous and liquid, induced specific surface features and phenomena: (i) enhancement of the implant surface roughness (higher in water). In this context, the damage depth is more prominent in water (as high as 40 mu m) vs. air (similar to 14 mu m). Also, the appearance of laser induced periodic surface structures (LIPSS) is recorded in both media, at periphery area, while in water they are registered at lower pulse count; (ii) variation of chemical surface content depending on the applied medium. Thus, in the central irradiation region, the oxygen was absent in air while its concentration was relatively high (6.44 wt%) in case of water; (iii) possibility of direct collection of synthesized titanium based nanoparticles in water environment, and (iv) formation of the plasma above the sample in both mediums, more volumetrically confined in water. These investigations showed that surface structuring and observed phenomena are in strong correlation with the medium used. The liquid - water seems like the medium of choice in regard to titanium implant biocompatibility and bio-activity (the water is a favorable medium for build-up of the oxide layer which affects bioactivity). The process of laser interaction with titanium implant targets was accompanied by the formation of plasma plume, which provides the additional sterilizing effect facilitating contaminant-free conditions. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Laser-assisted surface modification of Ti-implant in air and water environment
VL  - 428
SP  - 669
EP  - 675
DO  - 10.1016/j.apsusc.2017.09.185
ER  - 

@article{
author = "Trtica, Milan and Stašić, Jelena and Batani, Dimitri and Benocci, R. and Narayanan, V. and Ciganović, Jovan",
year = "2018",
abstract = "A study of the surface modification of titanium CP grade 2 implant/target with high intensity picosecond (Nd:YAG) laser, operating at 1064 nm wavelength and pulse duration of 40 ps, in gaseous (air) and liquid (water) medium, is presented. The exposure of Ti to a laser pulse energy of 17 mJ in both media - gaseous and liquid, induced specific surface features and phenomena: (i) enhancement of the implant surface roughness (higher in water). In this context, the damage depth is more prominent in water (as high as 40 mu m) vs. air (similar to 14 mu m). Also, the appearance of laser induced periodic surface structures (LIPSS) is recorded in both media, at periphery area, while in water they are registered at lower pulse count; (ii) variation of chemical surface content depending on the applied medium. Thus, in the central irradiation region, the oxygen was absent in air while its concentration was relatively high (6.44 wt%) in case of water; (iii) possibility of direct collection of synthesized titanium based nanoparticles in water environment, and (iv) formation of the plasma above the sample in both mediums, more volumetrically confined in water. These investigations showed that surface structuring and observed phenomena are in strong correlation with the medium used. The liquid - water seems like the medium of choice in regard to titanium implant biocompatibility and bio-activity (the water is a favorable medium for build-up of the oxide layer which affects bioactivity). The process of laser interaction with titanium implant targets was accompanied by the formation of plasma plume, which provides the additional sterilizing effect facilitating contaminant-free conditions. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Laser-assisted surface modification of Ti-implant in air and water environment",
volume = "428",
pages = "669-675",
doi = "10.1016/j.apsusc.2017.09.185"
}

Trtica, M., Stašić, J., Batani, D., Benocci, R., Narayanan, V.,& Ciganović, J.. (2018). Laser-assisted surface modification of Ti-implant in air and water environment. in Applied Surface Science, 428, 669-675.
https://doi.org/10.1016/j.apsusc.2017.09.185

Trtica M, Stašić J, Batani D, Benocci R, Narayanan V, Ciganović J. Laser-assisted surface modification of Ti-implant in air and water environment. in Applied Surface Science. 2018;428:669-675.
doi:10.1016/j.apsusc.2017.09.185 .

Trtica, Milan, Stašić, Jelena, Batani, Dimitri, Benocci, R., Narayanan, V., Ciganović, Jovan, "Laser-assisted surface modification of Ti-implant in air and water environment" in Applied Surface Science, 428 (2018):669-675,
https://doi.org/10.1016/j.apsusc.2017.09.185 . .

TY  - CONF
AU  - Pavkov, Vladimir
AU  - Stoiljković, Milovan
AU  - Maksimović, Vesna
AU  - Cvijović-Alagić, Ivana
AU  - Ciganović, Jovan
AU  - Vranješ, Mila
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8739
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
T1  - TiO2 Nanoparticle Deposition on Solid CP-Ti Substrate through Spraying Water Colloid in the Arc Plasma
SP  - 222
EP  - 224
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8739
ER  - 

@conference{
author = "Pavkov, Vladimir and Stoiljković, Milovan and Maksimović, Vesna and Cvijović-Alagić, Ivana and Ciganović, Jovan and Vranješ, Mila",
year = "2018",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia",
title = "TiO2 Nanoparticle Deposition on Solid CP-Ti Substrate through Spraying Water Colloid in the Arc Plasma",
pages = "222-224",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8739"
}

Pavkov, V., Stoiljković, M., Maksimović, V., Cvijović-Alagić, I., Ciganović, J.,& Vranješ, M.. (2018). TiO2 Nanoparticle Deposition on Solid CP-Ti Substrate through Spraying Water Colloid in the Arc Plasma. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
Belgrade : Serbian Academy of Sciences and Arts., 222-224.
https://hdl.handle.net/21.15107/rcub_vinar_8739

Pavkov V, Stoiljković M, Maksimović V, Cvijović-Alagić I, Ciganović J, Vranješ M. TiO2 Nanoparticle Deposition on Solid CP-Ti Substrate through Spraying Water Colloid in the Arc Plasma. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia. 2018;:222-224.
https://hdl.handle.net/21.15107/rcub_vinar_8739 .

Pavkov, Vladimir, Stoiljković, Milovan, Maksimović, Vesna, Cvijović-Alagić, Ivana, Ciganović, Jovan, Vranješ, Mila, "TiO2 Nanoparticle Deposition on Solid CP-Ti Substrate through Spraying Water Colloid in the Arc Plasma" in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia (2018):222-224,
https://hdl.handle.net/21.15107/rcub_vinar_8739 .

TY  - JOUR
AU  - Rajčić, Boris
AU  - Dimitrijević, Silvana B.
AU  - Petković, Marijana
AU  - Nišavić, Marija
AU  - Cindrić, Mario
AU  - Veljković, Filip M.
AU  - Veličković, Suzana
PY  - 2018
UR  - http://link.springer.com/10.1007/s11082-018-1476-2
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7687
AB  - In this work, a simple way for study the possibility of formation a vapor cluster species of tetrachloroauric acid (HAuCl4), using the laser ablation in the absence of a buffer or reactive atmosphere, and without a postablation supersonic expansion on a commercial matrix assisted laser desorption/ionization time-of-flight mass spectrometer, is reported. Tetrachloroauric acid is known as precursor for the synthesis of gold nanostructures and the complex salts; therefore it is an important task to discover and quantify the species arising from HAuCl4, in order to understand their role in the gold assisted reactions. Mass spectrum of HAuCl4in a reflector negative-ion mode contains the hydrated mono- and dinuclear gold clusters in the m/z range 286–436, and gold chloride clusters in the m/z range 447–795. In the first part of spectrum, m/z range 286–436, the hydrated gold cluster species of type Aun−(H2O)m(n = 1–2; m = 1, 2, 5, 7, 8) and [Aun(OH)k]−(H2O)m(n = 1–2; k = 1–2; m = 1, 4–8) were found. Besides that, there are gold chloride clusters with general formula [AuHr(HCl)2]−(H2O)m(m = 1–5; 8–9; r = 0–2) in this part of spectrum. In the second part of spectrum, the m/z range 447–795, only gold chloride clusters were obtained. Their general formulae can be written as [AuClt(HCl)v]−(H2O)m(t = 1–4; v = 5–8; m = 2–4, 6–8) and [Aun(HCl)v]−(H2O)m(n = 1–2, v = 4–5, m = 1–2, 5, 7). The analysis of concentration effects on the LDI mass spectra of gold clusters reveals that the relative intensities of signals for the mono- and dinuclear Au clusters increase with decreasing the concentration of water HAuCl4solutions.
T2  - Optical and Quantum Electronics
T1  - Gold chloride cluster ions generated by vacuum laser ablation
VL  - 50
IS  - 5
SP  - 218
DO  - 10.1007/s11082-018-1476-2
ER  - 

@article{
author = "Rajčić, Boris and Dimitrijević, Silvana B. and Petković, Marijana and Nišavić, Marija and Cindrić, Mario and Veljković, Filip M. and Veličković, Suzana",
year = "2018",
abstract = "In this work, a simple way for study the possibility of formation a vapor cluster species of tetrachloroauric acid (HAuCl4), using the laser ablation in the absence of a buffer or reactive atmosphere, and without a postablation supersonic expansion on a commercial matrix assisted laser desorption/ionization time-of-flight mass spectrometer, is reported. Tetrachloroauric acid is known as precursor for the synthesis of gold nanostructures and the complex salts; therefore it is an important task to discover and quantify the species arising from HAuCl4, in order to understand their role in the gold assisted reactions. Mass spectrum of HAuCl4in a reflector negative-ion mode contains the hydrated mono- and dinuclear gold clusters in the m/z range 286–436, and gold chloride clusters in the m/z range 447–795. In the first part of spectrum, m/z range 286–436, the hydrated gold cluster species of type Aun−(H2O)m(n = 1–2; m = 1, 2, 5, 7, 8) and [Aun(OH)k]−(H2O)m(n = 1–2; k = 1–2; m = 1, 4–8) were found. Besides that, there are gold chloride clusters with general formula [AuHr(HCl)2]−(H2O)m(m = 1–5; 8–9; r = 0–2) in this part of spectrum. In the second part of spectrum, the m/z range 447–795, only gold chloride clusters were obtained. Their general formulae can be written as [AuClt(HCl)v]−(H2O)m(t = 1–4; v = 5–8; m = 2–4, 6–8) and [Aun(HCl)v]−(H2O)m(n = 1–2, v = 4–5, m = 1–2, 5, 7). The analysis of concentration effects on the LDI mass spectra of gold clusters reveals that the relative intensities of signals for the mono- and dinuclear Au clusters increase with decreasing the concentration of water HAuCl4solutions.",
journal = "Optical and Quantum Electronics",
title = "Gold chloride cluster ions generated by vacuum laser ablation",
volume = "50",
number = "5",
pages = "218",
doi = "10.1007/s11082-018-1476-2"
}

Rajčić, B., Dimitrijević, S. B., Petković, M., Nišavić, M., Cindrić, M., Veljković, F. M.,& Veličković, S.. (2018). Gold chloride cluster ions generated by vacuum laser ablation. in Optical and Quantum Electronics, 50(5), 218.
https://doi.org/10.1007/s11082-018-1476-2

Rajčić B, Dimitrijević SB, Petković M, Nišavić M, Cindrić M, Veljković FM, Veličković S. Gold chloride cluster ions generated by vacuum laser ablation. in Optical and Quantum Electronics. 2018;50(5):218.
doi:10.1007/s11082-018-1476-2 .

Rajčić, Boris, Dimitrijević, Silvana B., Petković, Marijana, Nišavić, Marija, Cindrić, Mario, Veljković, Filip M., Veličković, Suzana, "Gold chloride cluster ions generated by vacuum laser ablation" in Optical and Quantum Electronics, 50, no. 5 (2018):218,
https://doi.org/10.1007/s11082-018-1476-2 . .

TY  - JOUR
AU  - Živković, Sanja
AU  - Savović, Jelena
AU  - Trtica, Milan
AU  - Mutić, Jelena J.
AU  - Momčilović, Miloš
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1426
AB  - The applicability of nanosecond infrared Transversely Excited Atmospheric (TEA) CO2 laser induced plasma for spectrochemical analysis of aluminum alloys was investigated. The plasma was generated by focusing a pulsed TEA CO2 laser that emits at 10.6 mu m on the Al target in ambient air at atmospheric pressure. The temporal profile of the laser pulse is composed of a 100 ns peak followed by a slowly decaying tail of about 2 mu s. The output pulse energy was approximately 160 mJ, thus the peak output power was estimated to be around 1.6 MW. Time-Integrated Space-Resolved Laser Induced Breakdown Spectroscopy (TISR-LIBS) was employed to obtain the emission spectra. The maximum intensity of emission, with sharp and well resolved spectral lines that were almost free of the background continuum, was obtained from plasma region 2 mm from the target surface. Linear calibration curves for Mg, Cr, Cu and Fe were obtained using aluminum alloy spectrochemical standards. The limits of detection for the investigated elements were in the 2-73 ppm range. Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) was used as a reference technique to estimate the accuracy of LIBS determination by use of control samples with known compositions. Comparison of the obtained results with those available in the literature confirms that LIBS system based on TEA CO2 laser, in combination with TISR spectral measurements, can be successfully applied to qualitative and quantitative determinations of minor elements in aluminum based alloys. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Elemental analysis of aluminum alloys by Laser Induced Breakdown Spectroscopy based on TEA CO2 laser
VL  - 700
SP  - 175
EP  - 184
DO  - 10.1016/j.jallcom.2017.01.060
ER  - 

@article{
author = "Živković, Sanja and Savović, Jelena and Trtica, Milan and Mutić, Jelena J. and Momčilović, Miloš",
year = "2017",
abstract = "The applicability of nanosecond infrared Transversely Excited Atmospheric (TEA) CO2 laser induced plasma for spectrochemical analysis of aluminum alloys was investigated. The plasma was generated by focusing a pulsed TEA CO2 laser that emits at 10.6 mu m on the Al target in ambient air at atmospheric pressure. The temporal profile of the laser pulse is composed of a 100 ns peak followed by a slowly decaying tail of about 2 mu s. The output pulse energy was approximately 160 mJ, thus the peak output power was estimated to be around 1.6 MW. Time-Integrated Space-Resolved Laser Induced Breakdown Spectroscopy (TISR-LIBS) was employed to obtain the emission spectra. The maximum intensity of emission, with sharp and well resolved spectral lines that were almost free of the background continuum, was obtained from plasma region 2 mm from the target surface. Linear calibration curves for Mg, Cr, Cu and Fe were obtained using aluminum alloy spectrochemical standards. The limits of detection for the investigated elements were in the 2-73 ppm range. Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) was used as a reference technique to estimate the accuracy of LIBS determination by use of control samples with known compositions. Comparison of the obtained results with those available in the literature confirms that LIBS system based on TEA CO2 laser, in combination with TISR spectral measurements, can be successfully applied to qualitative and quantitative determinations of minor elements in aluminum based alloys. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Elemental analysis of aluminum alloys by Laser Induced Breakdown Spectroscopy based on TEA CO2 laser",
volume = "700",
pages = "175-184",
doi = "10.1016/j.jallcom.2017.01.060"
}

Živković, S., Savović, J., Trtica, M., Mutić, J. J.,& Momčilović, M.. (2017). Elemental analysis of aluminum alloys by Laser Induced Breakdown Spectroscopy based on TEA CO2 laser. in Journal of Alloys and Compounds, 700, 175-184.
https://doi.org/10.1016/j.jallcom.2017.01.060

Živković S, Savović J, Trtica M, Mutić JJ, Momčilović M. Elemental analysis of aluminum alloys by Laser Induced Breakdown Spectroscopy based on TEA CO2 laser. in Journal of Alloys and Compounds. 2017;700:175-184.
doi:10.1016/j.jallcom.2017.01.060 .

Živković, Sanja, Savović, Jelena, Trtica, Milan, Mutić, Jelena J., Momčilović, Miloš, "Elemental analysis of aluminum alloys by Laser Induced Breakdown Spectroscopy based on TEA CO2 laser" in Journal of Alloys and Compounds, 700 (2017):175-184,
https://doi.org/10.1016/j.jallcom.2017.01.060 . .

TY  - JOUR
AU  - Živković, Sanja
AU  - Momčilović, Miloš
AU  - Staicu, Angela
AU  - Mutić, Jelena J.
AU  - Trtica, Milan
AU  - Savović, Jelena
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1427
AB  - The aim of this study was to develop a simple laser induced breakdown spectroscopy (LIBS) method for quantitative elemental analysis of powdered biological materials based on laboratory prepared calibration samples. The analysis was done using ungated single pulse LIBS in ambient air at atmospheric pressure. Transversely-Excited Atmospheric pressure (TEA) CO2 laser was used as an energy source for plasma generation on samples. The material used for the analysis was a blue-green alga Spirulina, widely used in food and pharmaceutical industries and also in a few biotechnological applications. To demonstrate the analytical potential of this particular LIBS system the obtained spectra were compared to the spectra obtained using a commercial LIBS system based on pulsed Nd:YAG laser. A single sample of known concentration was used to estimate detection limits for Ba, Ca, Fe, Mg, Mn, Si and Sr and compare detection power of these two LIES systems. TEA CO2 laser based LIES was also applied for quantitative analysis of the elements in powder Spirulina samples. Analytical curves for Ba, Fe, Mg, Mn and Sr were constructed using laboratory produced matrix-matched calibration samples. Inductively coupled plasma optical emission spectroscopy (ICP-OES) was used as the reference technique for elemental quantification, and reasonably well agreement between ICP and LIBS data was obtained. Results confirm that, in respect to its sensitivity and precision, TEA CO2 laser based LIBS can be successfully applied for quantitative analysis of macro and micro-elements in algal samples. The fact that nearly all classes of materials can be prepared as powders implies that the proposed method could be easily extended to a quantitative analysis of different kinds of materials, organic, biological or inorganic. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Spectrochimica Acta. Part B: Atomic Spectroscopy
T1  - Spectrochemical analysis of powdered biological samples using transversely excited atmospheric carbon dioxide laser plasma excitation
VL  - 128
SP  - 22
EP  - 29
DO  - 10.1016/j.sab.2016.12.009
ER  - 

@article{
author = "Živković, Sanja and Momčilović, Miloš and Staicu, Angela and Mutić, Jelena J. and Trtica, Milan and Savović, Jelena",
year = "2017",
abstract = "The aim of this study was to develop a simple laser induced breakdown spectroscopy (LIBS) method for quantitative elemental analysis of powdered biological materials based on laboratory prepared calibration samples. The analysis was done using ungated single pulse LIBS in ambient air at atmospheric pressure. Transversely-Excited Atmospheric pressure (TEA) CO2 laser was used as an energy source for plasma generation on samples. The material used for the analysis was a blue-green alga Spirulina, widely used in food and pharmaceutical industries and also in a few biotechnological applications. To demonstrate the analytical potential of this particular LIBS system the obtained spectra were compared to the spectra obtained using a commercial LIBS system based on pulsed Nd:YAG laser. A single sample of known concentration was used to estimate detection limits for Ba, Ca, Fe, Mg, Mn, Si and Sr and compare detection power of these two LIES systems. TEA CO2 laser based LIES was also applied for quantitative analysis of the elements in powder Spirulina samples. Analytical curves for Ba, Fe, Mg, Mn and Sr were constructed using laboratory produced matrix-matched calibration samples. Inductively coupled plasma optical emission spectroscopy (ICP-OES) was used as the reference technique for elemental quantification, and reasonably well agreement between ICP and LIBS data was obtained. Results confirm that, in respect to its sensitivity and precision, TEA CO2 laser based LIBS can be successfully applied for quantitative analysis of macro and micro-elements in algal samples. The fact that nearly all classes of materials can be prepared as powders implies that the proposed method could be easily extended to a quantitative analysis of different kinds of materials, organic, biological or inorganic. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Spectrochimica Acta. Part B: Atomic Spectroscopy",
title = "Spectrochemical analysis of powdered biological samples using transversely excited atmospheric carbon dioxide laser plasma excitation",
volume = "128",
pages = "22-29",
doi = "10.1016/j.sab.2016.12.009"
}

Živković, S., Momčilović, M., Staicu, A., Mutić, J. J., Trtica, M.,& Savović, J.. (2017). Spectrochemical analysis of powdered biological samples using transversely excited atmospheric carbon dioxide laser plasma excitation. in Spectrochimica Acta. Part B: Atomic Spectroscopy, 128, 22-29.
https://doi.org/10.1016/j.sab.2016.12.009

Živković S, Momčilović M, Staicu A, Mutić JJ, Trtica M, Savović J. Spectrochemical analysis of powdered biological samples using transversely excited atmospheric carbon dioxide laser plasma excitation. in Spectrochimica Acta. Part B: Atomic Spectroscopy. 2017;128:22-29.
doi:10.1016/j.sab.2016.12.009 .

Živković, Sanja, Momčilović, Miloš, Staicu, Angela, Mutić, Jelena J., Trtica, Milan, Savović, Jelena, "Spectrochemical analysis of powdered biological samples using transversely excited atmospheric carbon dioxide laser plasma excitation" in Spectrochimica Acta. Part B: Atomic Spectroscopy, 128 (2017):22-29,
https://doi.org/10.1016/j.sab.2016.12.009 . .