Todorović, Žaklina

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orcid::0000-0003-4727-0641
  • Todorović, Žaklina (16)
  • Todorović, Žaklina N. (1)

Author's Bibliography

Comparison of fine particulate matter level, chemical content and oxidative potential derived from two dissimilar urban environments

Jovanović, Maja; Savić, Jasmina; Kovačević, Renata; Tasić, Viša; Todorović, Žaklina; Stevanović, Svetlana; Manojlović, Dragan D.; Jovašević-Stojanović, Milena

(2020)

TY  - JOUR
AU  - Jovanović, Maja
AU  - Savić, Jasmina
AU  - Kovačević, Renata
AU  - Tasić, Viša
AU  - Todorović, Žaklina
AU  - Stevanović, Svetlana
AU  - Manojlović, Dragan D.
AU  - Jovašević-Stojanović, Milena
PY  - 2020
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/3820
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8750
AB  - Urban airborne particles contain a wide spectrum of components, known to have harmful effects on human health. This study reports a detailed investigation of fine particulate matter (PM2.5), chemical content and oxidative potential derived from two different urban environments. During summer and winter, 20-day campaigns were conducted at Belgrade city center (urban-background site – UB) and Bor (urban-industrial site – UI). Using various analytical techniques, carbonaceous compounds, water-soluble inorganic ions, major and trace elements were determined, while the oxidative potential of PM2.5 was estimated by dichloro-dihydro-fluorescein diacetate (DCFH-DA) assay (OPDCFH values). The mean PM2.5 concentrations in both urban environments were above the recommended daily value, and the dominant PM2.5 mass contributor was organic matter (29–55%). The OC/EC ratio was significantly higher at UB site during winter, which was an indication of a considerable contribution of secondary organic carbon to the overall organic carbon (OC). Water-soluble organic carbon (WSOC) was also higher at UB than at UI site, and it probably came from the same sources as OC. In general, the different partition of secondary organic aerosol (SOA) in warm and cold periods affected the number of organic components. Sulfates and nitrates were the most abundant ions at both sites and they counted approximately 40% (summer) and 50% (winter) of total ions. Further, the concentrations of the most elements, particularly some potentially carcinogenic elements such as As, Cd and Pb were significantly higher at UI, due to the emissions from the copper smelter complex in the vicinity. The mean OPDCFH values were similar during the summer at both sampling sites, whereas a statistically significant difference between sites was noticed in favor of UB environment in winter.
T2  - Science of the Total Environment
T1  - Comparison of fine particulate matter level, chemical content and oxidative potential derived from two dissimilar urban environments
VL  - 708
SP  - 135209
DO  - 10.1016/j.scitotenv.2019.135209
ER  - 
@article{
author = "Jovanović, Maja and Savić, Jasmina and Kovačević, Renata and Tasić, Viša and Todorović, Žaklina and Stevanović, Svetlana and Manojlović, Dragan D. and Jovašević-Stojanović, Milena",
year = "2020",
abstract = "Urban airborne particles contain a wide spectrum of components, known to have harmful effects on human health. This study reports a detailed investigation of fine particulate matter (PM2.5), chemical content and oxidative potential derived from two different urban environments. During summer and winter, 20-day campaigns were conducted at Belgrade city center (urban-background site – UB) and Bor (urban-industrial site – UI). Using various analytical techniques, carbonaceous compounds, water-soluble inorganic ions, major and trace elements were determined, while the oxidative potential of PM2.5 was estimated by dichloro-dihydro-fluorescein diacetate (DCFH-DA) assay (OPDCFH values). The mean PM2.5 concentrations in both urban environments were above the recommended daily value, and the dominant PM2.5 mass contributor was organic matter (29–55%). The OC/EC ratio was significantly higher at UB site during winter, which was an indication of a considerable contribution of secondary organic carbon to the overall organic carbon (OC). Water-soluble organic carbon (WSOC) was also higher at UB than at UI site, and it probably came from the same sources as OC. In general, the different partition of secondary organic aerosol (SOA) in warm and cold periods affected the number of organic components. Sulfates and nitrates were the most abundant ions at both sites and they counted approximately 40% (summer) and 50% (winter) of total ions. Further, the concentrations of the most elements, particularly some potentially carcinogenic elements such as As, Cd and Pb were significantly higher at UI, due to the emissions from the copper smelter complex in the vicinity. The mean OPDCFH values were similar during the summer at both sampling sites, whereas a statistically significant difference between sites was noticed in favor of UB environment in winter.",
journal = "Science of the Total Environment",
title = "Comparison of fine particulate matter level, chemical content and oxidative potential derived from two dissimilar urban environments",
volume = "708",
pages = "135209",
doi = "10.1016/j.scitotenv.2019.135209"
}
Jovanović, M., Savić, J., Kovačević, R., Tasić, V., Todorović, Ž., Stevanović, S., Manojlović, D. D.,& Jovašević-Stojanović, M.. (2020). Comparison of fine particulate matter level, chemical content and oxidative potential derived from two dissimilar urban environments. in Science of the Total Environment, 708, 135209.
https://doi.org/10.1016/j.scitotenv.2019.135209
Jovanović M, Savić J, Kovačević R, Tasić V, Todorović Ž, Stevanović S, Manojlović DD, Jovašević-Stojanović M. Comparison of fine particulate matter level, chemical content and oxidative potential derived from two dissimilar urban environments. in Science of the Total Environment. 2020;708:135209.
doi:10.1016/j.scitotenv.2019.135209 .
Jovanović, Maja, Savić, Jasmina, Kovačević, Renata, Tasić, Viša, Todorović, Žaklina, Stevanović, Svetlana, Manojlović, Dragan D., Jovašević-Stojanović, Milena, "Comparison of fine particulate matter level, chemical content and oxidative potential derived from two dissimilar urban environments" in Science of the Total Environment, 708 (2020):135209,
https://doi.org/10.1016/j.scitotenv.2019.135209 . .
1
1

Modelling of cations retention in ion chromatography with methanesulfonic acid as eluent

Todorović, Žaklina; Rajaković, Ljubinka V.; Onjia, Antonije E.

(2017)

TY  - JOUR
AU  - Todorović, Žaklina
AU  - Rajaković, Ljubinka V.
AU  - Onjia, Antonije E.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1472
AB  - The two retention models, the linear solvent strength model (LSS) and the quadratic relationship, in addition to artificial neural network (ANN) approach, were compared in their ability to predict the retention behaviour of common cations (Li, Na, NH4, K, Mg and Ca) in isocratic ion chromatography using the methanesulfonic acid (MSA) eluent. Over wide variations in the MSA concentration, the quadratic model shows a quite good prediction power. LSS can be used only for monovalent cations and in the proximity of the experimental design point. ANN fails to predict the retention for the data not included in the training set. To find the optimal conditions in the experimental design, the normalized resolution product as a chromatographic objective function was employed. The optimum MSA concentration in the eluent on a Dionex CS12 column was found to be 18 mM, with the total analysis time of less than 10 min.
T2  - Hemijska industrija
T1  - Modelling of cations retention in ion chromatography with methanesulfonic acid as eluent
VL  - 71
IS  - 1
SP  - 27
EP  - 33
DO  - 10.2298/HEMIND151107014T
ER  - 
@article{
author = "Todorović, Žaklina and Rajaković, Ljubinka V. and Onjia, Antonije E.",
year = "2017",
abstract = "The two retention models, the linear solvent strength model (LSS) and the quadratic relationship, in addition to artificial neural network (ANN) approach, were compared in their ability to predict the retention behaviour of common cations (Li, Na, NH4, K, Mg and Ca) in isocratic ion chromatography using the methanesulfonic acid (MSA) eluent. Over wide variations in the MSA concentration, the quadratic model shows a quite good prediction power. LSS can be used only for monovalent cations and in the proximity of the experimental design point. ANN fails to predict the retention for the data not included in the training set. To find the optimal conditions in the experimental design, the normalized resolution product as a chromatographic objective function was employed. The optimum MSA concentration in the eluent on a Dionex CS12 column was found to be 18 mM, with the total analysis time of less than 10 min.",
journal = "Hemijska industrija",
title = "Modelling of cations retention in ion chromatography with methanesulfonic acid as eluent",
volume = "71",
number = "1",
pages = "27-33",
doi = "10.2298/HEMIND151107014T"
}
Todorović, Ž., Rajaković, L. V.,& Onjia, A. E.. (2017). Modelling of cations retention in ion chromatography with methanesulfonic acid as eluent. in Hemijska industrija, 71(1), 27-33.
https://doi.org/10.2298/HEMIND151107014T
Todorović Ž, Rajaković LV, Onjia AE. Modelling of cations retention in ion chromatography with methanesulfonic acid as eluent. in Hemijska industrija. 2017;71(1):27-33.
doi:10.2298/HEMIND151107014T .
Todorović, Žaklina, Rajaković, Ljubinka V., Onjia, Antonije E., "Modelling of cations retention in ion chromatography with methanesulfonic acid as eluent" in Hemijska industrija, 71, no. 1 (2017):27-33,
https://doi.org/10.2298/HEMIND151107014T . .
2

Interpretative optimization of the isocratic ion chromatographic separation of anions

Todorović, Žaklina; Rajaković, Ljubinka V.; Onjia, Antonije E.

(2016)

TY  - JOUR
AU  - Todorović, Žaklina
AU  - Rajaković, Ljubinka V.
AU  - Onjia, Antonije E.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1188
AB  - Interpretive retention modeling was utilized to optimize the isocratic ion chromatographic (IC) separation of the nine anions (formate, fluoride, chloride, nitrite, bromide, nitrate, phosphate, sulfate and oxalate). The carbonate-bicarbonate eluent was used and separation was done on a Dionex AS14 ion-exchange column. The influence of combined effects of two mobile phase factors, the total eluent concentration (2-6 mM) and the carbonate/bicaronate ratio from 1:9 to 9:1 (which correspond to pH range 9.35-11.27), on the IC separation was studied. The multiple species analyte/eluent model that takes into account ion-exchange equilibria of the eluent and sample anions was used. In order to estimate the parameters in the model, a non-linear fitting of the retention data, obtained at two-factor three-level experimental design, was applied. To find the optimal conditions in the experimental design, the normalized resolution product as a chromatographic objective function was employed. This criterion includes both the individual peak resolution and the total analysis time. A good agreement between experimental and simulated chromatograms was obtained.
T2  - Journal of the Serbian Chemical Society
T1  - Interpretative optimization of the isocratic ion chromatographic separation of anions
VL  - 81
IS  - 6
SP  - 661
EP  - 672
DO  - 10.2298/JSC150927022T
ER  - 
@article{
author = "Todorović, Žaklina and Rajaković, Ljubinka V. and Onjia, Antonije E.",
year = "2016",
abstract = "Interpretive retention modeling was utilized to optimize the isocratic ion chromatographic (IC) separation of the nine anions (formate, fluoride, chloride, nitrite, bromide, nitrate, phosphate, sulfate and oxalate). The carbonate-bicarbonate eluent was used and separation was done on a Dionex AS14 ion-exchange column. The influence of combined effects of two mobile phase factors, the total eluent concentration (2-6 mM) and the carbonate/bicaronate ratio from 1:9 to 9:1 (which correspond to pH range 9.35-11.27), on the IC separation was studied. The multiple species analyte/eluent model that takes into account ion-exchange equilibria of the eluent and sample anions was used. In order to estimate the parameters in the model, a non-linear fitting of the retention data, obtained at two-factor three-level experimental design, was applied. To find the optimal conditions in the experimental design, the normalized resolution product as a chromatographic objective function was employed. This criterion includes both the individual peak resolution and the total analysis time. A good agreement between experimental and simulated chromatograms was obtained.",
journal = "Journal of the Serbian Chemical Society",
title = "Interpretative optimization of the isocratic ion chromatographic separation of anions",
volume = "81",
number = "6",
pages = "661-672",
doi = "10.2298/JSC150927022T"
}
Todorović, Ž., Rajaković, L. V.,& Onjia, A. E.. (2016). Interpretative optimization of the isocratic ion chromatographic separation of anions. in Journal of the Serbian Chemical Society, 81(6), 661-672.
https://doi.org/10.2298/JSC150927022T
Todorović Ž, Rajaković LV, Onjia AE. Interpretative optimization of the isocratic ion chromatographic separation of anions. in Journal of the Serbian Chemical Society. 2016;81(6):661-672.
doi:10.2298/JSC150927022T .
Todorović, Žaklina, Rajaković, Ljubinka V., Onjia, Antonije E., "Interpretative optimization of the isocratic ion chromatographic separation of anions" in Journal of the Serbian Chemical Society, 81, no. 6 (2016):661-672,
https://doi.org/10.2298/JSC150927022T . .
1
1

Experimental Design Optimization of the Determination of Total Halogens in Coal by Combustion-Ion Chromatography

Ignjatović, Ivana D. Sredović; Onjia, Antonije E.; Ignjatović, Ljubiša M.; Todorović, Žaklina; Rajaković, Ljubinka V.

(2015)

TY  - JOUR
AU  - Ignjatović, Ivana D. Sredović
AU  - Onjia, Antonije E.
AU  - Ignjatović, Ljubiša M.
AU  - Todorović, Žaklina
AU  - Rajaković, Ljubinka V.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/713
AB  - Determination of total halogens in coal was investigated with oxygen bomb combustion followed by ion chromatography. Experimental parameters were optimized by fractional factorial design and response surface methodology. Fractional factorial design was employed in screening experiments to evaluate the influence of the oxygen pressure, catalyst, absorption solution, reduction reagent, bomb cooling time, and a combustion aid on the combustion of coal in an oxygen bomb. Response surface methodology was conducted to further refine the results obtained by fractional factorial design and to define parameters for the procedure. The accuracy and precision of combustion with ion chromatography were evaluated by the use of two certified reference materials and by fortified in-house coal standards. The limits of detection and quantification for total halogens were 0.84 and 2.80 milligrams per kilogram, respectively, for 500 milligram samples. Ion chromatography provided relative standard deviations less than 4 percent, recoveries exceeding 95 percent, and was convenient. This method is recommended for routine determination of total halogens in coal because of its reliability.
T2  - Analytical Letters
T1  - Experimental Design Optimization of the Determination of Total Halogens in Coal by Combustion-Ion Chromatography
VL  - 48
IS  - 16
SP  - 2597
EP  - 2612
DO  - 10.1080/00032719.2015.1041029
ER  - 
@article{
author = "Ignjatović, Ivana D. Sredović and Onjia, Antonije E. and Ignjatović, Ljubiša M. and Todorović, Žaklina and Rajaković, Ljubinka V.",
year = "2015",
abstract = "Determination of total halogens in coal was investigated with oxygen bomb combustion followed by ion chromatography. Experimental parameters were optimized by fractional factorial design and response surface methodology. Fractional factorial design was employed in screening experiments to evaluate the influence of the oxygen pressure, catalyst, absorption solution, reduction reagent, bomb cooling time, and a combustion aid on the combustion of coal in an oxygen bomb. Response surface methodology was conducted to further refine the results obtained by fractional factorial design and to define parameters for the procedure. The accuracy and precision of combustion with ion chromatography were evaluated by the use of two certified reference materials and by fortified in-house coal standards. The limits of detection and quantification for total halogens were 0.84 and 2.80 milligrams per kilogram, respectively, for 500 milligram samples. Ion chromatography provided relative standard deviations less than 4 percent, recoveries exceeding 95 percent, and was convenient. This method is recommended for routine determination of total halogens in coal because of its reliability.",
journal = "Analytical Letters",
title = "Experimental Design Optimization of the Determination of Total Halogens in Coal by Combustion-Ion Chromatography",
volume = "48",
number = "16",
pages = "2597-2612",
doi = "10.1080/00032719.2015.1041029"
}
Ignjatović, I. D. S., Onjia, A. E., Ignjatović, L. M., Todorović, Ž.,& Rajaković, L. V.. (2015). Experimental Design Optimization of the Determination of Total Halogens in Coal by Combustion-Ion Chromatography. in Analytical Letters, 48(16), 2597-2612.
https://doi.org/10.1080/00032719.2015.1041029
Ignjatović IDS, Onjia AE, Ignjatović LM, Todorović Ž, Rajaković LV. Experimental Design Optimization of the Determination of Total Halogens in Coal by Combustion-Ion Chromatography. in Analytical Letters. 2015;48(16):2597-2612.
doi:10.1080/00032719.2015.1041029 .
Ignjatović, Ivana D. Sredović, Onjia, Antonije E., Ignjatović, Ljubiša M., Todorović, Žaklina, Rajaković, Ljubinka V., "Experimental Design Optimization of the Determination of Total Halogens in Coal by Combustion-Ion Chromatography" in Analytical Letters, 48, no. 16 (2015):2597-2612,
https://doi.org/10.1080/00032719.2015.1041029 . .
5
4
4

Analytical methods for arsenic speciation analysis

Rajaković, Ljubinka V.; Todorović, Žaklina; Rajaković-Ognjanović, Vladana N.; Onjia, Antonije E.

(2013)

TY  - JOUR
AU  - Rajaković, Ljubinka V.
AU  - Todorović, Žaklina
AU  - Rajaković-Ognjanović, Vladana N.
AU  - Onjia, Antonije E.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5759
AB  - Arsenic exists in the form of various chemical species differing in their physicochemical behaviour, toxicity, bioavailability and biotransformation. The determination of arsenic species is an important issue for environmental, clinical and food chemistry. However, differentiation of these species is a quite complex analytical task. Numerous speciation procedures have been studied that include electrochemical, chromatographic, spectrometric and hyphenated techniques. This review presents the relevant research in the field of arsenic speciation analysis with novel applications and significant advances. Stability of arsenic species and each of the analytical steps (sample collection, storage, preservation, extraction) of the arsenic speciation methods is particularly evaluated. Analytical validation and performance of these Methods are also reviewed.
T2  - Journal of the Serbian Chemical Society
T1  - Analytical methods for arsenic speciation analysis
VL  - 78
IS  - 10
SP  - 1461
EP  - 1479
DO  - 10.2298/JSC130315064R
ER  - 
@article{
author = "Rajaković, Ljubinka V. and Todorović, Žaklina and Rajaković-Ognjanović, Vladana N. and Onjia, Antonije E.",
year = "2013",
abstract = "Arsenic exists in the form of various chemical species differing in their physicochemical behaviour, toxicity, bioavailability and biotransformation. The determination of arsenic species is an important issue for environmental, clinical and food chemistry. However, differentiation of these species is a quite complex analytical task. Numerous speciation procedures have been studied that include electrochemical, chromatographic, spectrometric and hyphenated techniques. This review presents the relevant research in the field of arsenic speciation analysis with novel applications and significant advances. Stability of arsenic species and each of the analytical steps (sample collection, storage, preservation, extraction) of the arsenic speciation methods is particularly evaluated. Analytical validation and performance of these Methods are also reviewed.",
journal = "Journal of the Serbian Chemical Society",
title = "Analytical methods for arsenic speciation analysis",
volume = "78",
number = "10",
pages = "1461-1479",
doi = "10.2298/JSC130315064R"
}
Rajaković, L. V., Todorović, Ž., Rajaković-Ognjanović, V. N.,& Onjia, A. E.. (2013). Analytical methods for arsenic speciation analysis. in Journal of the Serbian Chemical Society, 78(10), 1461-1479.
https://doi.org/10.2298/JSC130315064R
Rajaković LV, Todorović Ž, Rajaković-Ognjanović VN, Onjia AE. Analytical methods for arsenic speciation analysis. in Journal of the Serbian Chemical Society. 2013;78(10):1461-1479.
doi:10.2298/JSC130315064R .
Rajaković, Ljubinka V., Todorović, Žaklina, Rajaković-Ognjanović, Vladana N., Onjia, Antonije E., "Analytical methods for arsenic speciation analysis" in Journal of the Serbian Chemical Society, 78, no. 10 (2013):1461-1479,
https://doi.org/10.2298/JSC130315064R . .
27
19
26

Simple and cost-effective measures for the improvement of paper mill effluent treatment - A case study

Zarkovic, Darja B.; Todorović, Žaklina; Rajaković, Ljubinka V.

(2011)

TY  - JOUR
AU  - Zarkovic, Darja B.
AU  - Todorović, Žaklina
AU  - Rajaković, Ljubinka V.
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4245
AB  - In this study, the performance and the efficiency of physico-chemical effluent treatment in a paper mill was investigated, with the aim of evaluating the treatment rationality and running stability. The effluent treatment plant (ETP) uses alum as a coagulant and polyacrylamide as a flocculant in multi-stage water purification. Inadequate efficiency and some operational problems were observed and their occurrences were investigated. Several simple measures inside the mill and some technical measures can prevent or postpone expensive end-of-pipe treatment investments, such as biological treatment. Chemically enhanced primary treatment under optimal operating conditions can be a stand-alone technique for achieving high quality effluent. Furthermore, reductions in wastewater generation in combination with fiber and filler recovery provide environmental benefits as well as significant economic savings in production. The advantages of the cleaner production approach in existing treatment units compared to expensive biological end-of-pipe technologies are obvious. This study demonstrated that the examined mill could easily and cost-effectively change its water system toward strict discharge limits by continuing to use the existing treatment units. (C) 2010 Elsevier Ltd. All rights reserved.
T2  - Journal of Cleaner Production
T1  - Simple and cost-effective measures for the improvement of paper mill effluent treatment - A case study
VL  - 19
IS  - 6-7
SP  - 764
EP  - 774
DO  - 10.1016/j.jclepro.2010.11.015
ER  - 
@article{
author = "Zarkovic, Darja B. and Todorović, Žaklina and Rajaković, Ljubinka V.",
year = "2011",
abstract = "In this study, the performance and the efficiency of physico-chemical effluent treatment in a paper mill was investigated, with the aim of evaluating the treatment rationality and running stability. The effluent treatment plant (ETP) uses alum as a coagulant and polyacrylamide as a flocculant in multi-stage water purification. Inadequate efficiency and some operational problems were observed and their occurrences were investigated. Several simple measures inside the mill and some technical measures can prevent or postpone expensive end-of-pipe treatment investments, such as biological treatment. Chemically enhanced primary treatment under optimal operating conditions can be a stand-alone technique for achieving high quality effluent. Furthermore, reductions in wastewater generation in combination with fiber and filler recovery provide environmental benefits as well as significant economic savings in production. The advantages of the cleaner production approach in existing treatment units compared to expensive biological end-of-pipe technologies are obvious. This study demonstrated that the examined mill could easily and cost-effectively change its water system toward strict discharge limits by continuing to use the existing treatment units. (C) 2010 Elsevier Ltd. All rights reserved.",
journal = "Journal of Cleaner Production",
title = "Simple and cost-effective measures for the improvement of paper mill effluent treatment - A case study",
volume = "19",
number = "6-7",
pages = "764-774",
doi = "10.1016/j.jclepro.2010.11.015"
}
Zarkovic, D. B., Todorović, Ž.,& Rajaković, L. V.. (2011). Simple and cost-effective measures for the improvement of paper mill effluent treatment - A case study. in Journal of Cleaner Production, 19(6-7), 764-774.
https://doi.org/10.1016/j.jclepro.2010.11.015
Zarkovic DB, Todorović Ž, Rajaković LV. Simple and cost-effective measures for the improvement of paper mill effluent treatment - A case study. in Journal of Cleaner Production. 2011;19(6-7):764-774.
doi:10.1016/j.jclepro.2010.11.015 .
Zarkovic, Darja B., Todorović, Žaklina, Rajaković, Ljubinka V., "Simple and cost-effective measures for the improvement of paper mill effluent treatment - A case study" in Journal of Cleaner Production, 19, no. 6-7 (2011):764-774,
https://doi.org/10.1016/j.jclepro.2010.11.015 . .
29
33

Photocatalytic degradation of wastewater polluted by methyl-tertiary-butyl-ether using titanium-dioxide and doped titanium-dioxide

Kuburovic, Natasa D.; Golubović, Aleksandar V.; Todorović, Žaklina; Gašić, Slavica M.; Solevic, Tatjana

(2009)

TY  - CONF
AU  - Kuburovic, Natasa D.
AU  - Golubović, Aleksandar V.
AU  - Todorović, Žaklina
AU  - Gašić, Slavica M.
AU  - Solevic, Tatjana
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6794
AB  - The subject of this research was utilization of concentrated solar radiation simulated with a sodium lamp SONT UV100, in lab condition, on removal of wastewater polluted by methyl-tertiary-butyl-ether (MTBE). The effects of titanium dioxide catalyst (commercial: Degussa P-25 (R) and 100% anatase, as well as sol-gel obtained titanium) on degradation of MTBE have been investigated. The processes were performed in slurry-catalyst batch circulating reactor. The photocatalytic degradation with different concentrations of TiO2 Degussa P-250 (R) catalyst: 2.5 g/L, 1 g/L and 0.50 g/L was studied. Our results showed that the MTBE degradation reached 50.80% in only 60 minutes, when 2.5 g/L of that catalyst was used. Also, the concentrated irradiation in combination with TiO2 (100% anatase) and FeCl3 caused high total degradation degree of 58.22%, for only 30 minutes. We synthesized titanium-dioxide, nanopowders doped with LaCl3 center dot 7H(2)O and FeCl3 center dot 6H(2)O, by sol-gel procedure. The highest degradation rate showed La-TiO2, for only 30 minutes and 48.60% of total degradation.
T1  - Photocatalytic degradation of wastewater polluted by methyl-tertiary-butyl-ether using titanium-dioxide and doped titanium-dioxide
SP  - 19
EP  - +
ER  - 
@conference{
author = "Kuburovic, Natasa D. and Golubović, Aleksandar V. and Todorović, Žaklina and Gašić, Slavica M. and Solevic, Tatjana",
year = "2009",
abstract = "The subject of this research was utilization of concentrated solar radiation simulated with a sodium lamp SONT UV100, in lab condition, on removal of wastewater polluted by methyl-tertiary-butyl-ether (MTBE). The effects of titanium dioxide catalyst (commercial: Degussa P-25 (R) and 100% anatase, as well as sol-gel obtained titanium) on degradation of MTBE have been investigated. The processes were performed in slurry-catalyst batch circulating reactor. The photocatalytic degradation with different concentrations of TiO2 Degussa P-250 (R) catalyst: 2.5 g/L, 1 g/L and 0.50 g/L was studied. Our results showed that the MTBE degradation reached 50.80% in only 60 minutes, when 2.5 g/L of that catalyst was used. Also, the concentrated irradiation in combination with TiO2 (100% anatase) and FeCl3 caused high total degradation degree of 58.22%, for only 30 minutes. We synthesized titanium-dioxide, nanopowders doped with LaCl3 center dot 7H(2)O and FeCl3 center dot 6H(2)O, by sol-gel procedure. The highest degradation rate showed La-TiO2, for only 30 minutes and 48.60% of total degradation.",
title = "Photocatalytic degradation of wastewater polluted by methyl-tertiary-butyl-ether using titanium-dioxide and doped titanium-dioxide",
pages = "19-+"
}
Kuburovic, N. D., Golubović, A. V., Todorović, Ž., Gašić, S. M.,& Solevic, T.. (2009). Photocatalytic degradation of wastewater polluted by methyl-tertiary-butyl-ether using titanium-dioxide and doped titanium-dioxide. , 19-+.
Kuburovic ND, Golubović AV, Todorović Ž, Gašić SM, Solevic T. Photocatalytic degradation of wastewater polluted by methyl-tertiary-butyl-ether using titanium-dioxide and doped titanium-dioxide. 2009;:19-+..
Kuburovic, Natasa D., Golubović, Aleksandar V., Todorović, Žaklina, Gašić, Slavica M., Solevic, Tatjana, "Photocatalytic degradation of wastewater polluted by methyl-tertiary-butyl-ether using titanium-dioxide and doped titanium-dioxide" (2009):19-+.

Determination of inorganic anions in papermaking waters by ion chromatography

Zarkovic, Darja; Todorović, Žaklina; Krgovic, Milorad; Rajaković, Ljubinka V.

(2009)

TY  - JOUR
AU  - Zarkovic, Darja
AU  - Todorović, Žaklina
AU  - Krgovic, Milorad
AU  - Rajaković, Ljubinka V.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3668
AB  - A suppressed ion chromatography (IC) method for the determination of inorganic anions in process water from paperboard production was developed and validated. Common inorganic anions (Cl(-), NO(3)(-), PO(4)(3-) and SO(4)(2-)) were detected in fresh and process water samples collected from a paperboard production system at 16 characteristic points. It was shown that the use of an IonPac (R)-AS14 column under isocratic conditions with Na(2)CO(3)/NaHCO(3) as the eluent and a suppression device proved to be a reliable analytical solution for the separation of the inorganic anions present in papermaking waters. This IC method is quite satisfactory concerning selectivity and sensitivity, and enables the determination of several inorganic anions over a wide concentration range. According to the obtained results, the total amount of analyzed inorganic anions was below 0.1 g/L, i.e., below the critical value which may trigger operational problems in paper production.
T2  - Journal of the Serbian Chemical Society
T1  - Determination of inorganic anions in papermaking waters by ion chromatography
VL  - 74
IS  - 3
SP  - 301
EP  - 310
DO  - 10.2298/JSC0903301Z
ER  - 
@article{
author = "Zarkovic, Darja and Todorović, Žaklina and Krgovic, Milorad and Rajaković, Ljubinka V.",
year = "2009",
abstract = "A suppressed ion chromatography (IC) method for the determination of inorganic anions in process water from paperboard production was developed and validated. Common inorganic anions (Cl(-), NO(3)(-), PO(4)(3-) and SO(4)(2-)) were detected in fresh and process water samples collected from a paperboard production system at 16 characteristic points. It was shown that the use of an IonPac (R)-AS14 column under isocratic conditions with Na(2)CO(3)/NaHCO(3) as the eluent and a suppression device proved to be a reliable analytical solution for the separation of the inorganic anions present in papermaking waters. This IC method is quite satisfactory concerning selectivity and sensitivity, and enables the determination of several inorganic anions over a wide concentration range. According to the obtained results, the total amount of analyzed inorganic anions was below 0.1 g/L, i.e., below the critical value which may trigger operational problems in paper production.",
journal = "Journal of the Serbian Chemical Society",
title = "Determination of inorganic anions in papermaking waters by ion chromatography",
volume = "74",
number = "3",
pages = "301-310",
doi = "10.2298/JSC0903301Z"
}
Zarkovic, D., Todorović, Ž., Krgovic, M.,& Rajaković, L. V.. (2009). Determination of inorganic anions in papermaking waters by ion chromatography. in Journal of the Serbian Chemical Society, 74(3), 301-310.
https://doi.org/10.2298/JSC0903301Z
Zarkovic D, Todorović Ž, Krgovic M, Rajaković LV. Determination of inorganic anions in papermaking waters by ion chromatography. in Journal of the Serbian Chemical Society. 2009;74(3):301-310.
doi:10.2298/JSC0903301Z .
Zarkovic, Darja, Todorović, Žaklina, Krgovic, Milorad, Rajaković, Ljubinka V., "Determination of inorganic anions in papermaking waters by ion chromatography" in Journal of the Serbian Chemical Society, 74, no. 3 (2009):301-310,
https://doi.org/10.2298/JSC0903301Z . .
2
4

Interpretative optimization and artificial neural network modeling of the gas chromatographic separation of polycyclic aromatic hydrocarbons

Sremac, Snežana; Popović, Aleksandar R.; Todorović, Žaklina; Čokeša, Đuro; Onjia, Antonije E.

(2008)

TY  - JOUR
AU  - Sremac, Snežana
AU  - Popović, Aleksandar R.
AU  - Todorović, Žaklina
AU  - Čokeša, Đuro
AU  - Onjia, Antonije E.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3468
AB  - An interpretative strategy (factorial design experimentation + total resolution analysis + chromatogram simulation) was employed to optimize the separation of 16 polycyclic aromatic hydrocarbons (PAHs) (naphthalene, acenaphthylene, acenaphthene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, chrysene, benzo(a)anthracene, benzo(k)fluoranthene, benzo(b)fluoranthene, benzo(a)pyrene, indeno(1,2,3-c,d)pyrene, dibenzo(a,h)anthracene, benzo(g,h,i)perylene) in temperature-programmed gas chromatography (GC). Also, the retention behavior of PAHs in the same GC system was studied by a feed-forward artificial neural network (ANN). GC separation was investigated as a function of one (linear temperature ramp) or two (linear temperature ramp+the final hold temperature) variables. The applied interpretative approach resulted in rather good agreement between the measured and the predicted retention times for PAHs in both one and two variable modeling. The ANN model, strongly affected by the number of input experiments, was shown to be less effective for one variable used, but quite successful when two input variables were used. All PAHs, including difficult to separate peak pairs (benzo(k)fluoranthene/benzo(b)fluoranthene and indeno(1,2,3-c,d)pyrene/dibenzo(a,h)anthracene), were separated in a standard (5% phenyl-95% climethylpolysiloxane) capillary column at an optimum temperature ramp of 8.0 degrees C/min and final hold temperature in the range of 260-320 degrees C. (C) 2008 Elsevier B.V. All rights reserved.
T2  - Talanta
T1  - Interpretative optimization and artificial neural network modeling of the gas chromatographic separation of polycyclic aromatic hydrocarbons
VL  - 76
IS  - 1
SP  - 66
EP  - 71
DO  - 10.1016/j.talanta.2008.02.004
ER  - 
@article{
author = "Sremac, Snežana and Popović, Aleksandar R. and Todorović, Žaklina and Čokeša, Đuro and Onjia, Antonije E.",
year = "2008",
abstract = "An interpretative strategy (factorial design experimentation + total resolution analysis + chromatogram simulation) was employed to optimize the separation of 16 polycyclic aromatic hydrocarbons (PAHs) (naphthalene, acenaphthylene, acenaphthene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, chrysene, benzo(a)anthracene, benzo(k)fluoranthene, benzo(b)fluoranthene, benzo(a)pyrene, indeno(1,2,3-c,d)pyrene, dibenzo(a,h)anthracene, benzo(g,h,i)perylene) in temperature-programmed gas chromatography (GC). Also, the retention behavior of PAHs in the same GC system was studied by a feed-forward artificial neural network (ANN). GC separation was investigated as a function of one (linear temperature ramp) or two (linear temperature ramp+the final hold temperature) variables. The applied interpretative approach resulted in rather good agreement between the measured and the predicted retention times for PAHs in both one and two variable modeling. The ANN model, strongly affected by the number of input experiments, was shown to be less effective for one variable used, but quite successful when two input variables were used. All PAHs, including difficult to separate peak pairs (benzo(k)fluoranthene/benzo(b)fluoranthene and indeno(1,2,3-c,d)pyrene/dibenzo(a,h)anthracene), were separated in a standard (5% phenyl-95% climethylpolysiloxane) capillary column at an optimum temperature ramp of 8.0 degrees C/min and final hold temperature in the range of 260-320 degrees C. (C) 2008 Elsevier B.V. All rights reserved.",
journal = "Talanta",
title = "Interpretative optimization and artificial neural network modeling of the gas chromatographic separation of polycyclic aromatic hydrocarbons",
volume = "76",
number = "1",
pages = "66-71",
doi = "10.1016/j.talanta.2008.02.004"
}
Sremac, S., Popović, A. R., Todorović, Ž., Čokeša, Đ.,& Onjia, A. E.. (2008). Interpretative optimization and artificial neural network modeling of the gas chromatographic separation of polycyclic aromatic hydrocarbons. in Talanta, 76(1), 66-71.
https://doi.org/10.1016/j.talanta.2008.02.004
Sremac S, Popović AR, Todorović Ž, Čokeša Đ, Onjia AE. Interpretative optimization and artificial neural network modeling of the gas chromatographic separation of polycyclic aromatic hydrocarbons. in Talanta. 2008;76(1):66-71.
doi:10.1016/j.talanta.2008.02.004 .
Sremac, Snežana, Popović, Aleksandar R., Todorović, Žaklina, Čokeša, Đuro, Onjia, Antonije E., "Interpretative optimization and artificial neural network modeling of the gas chromatographic separation of polycyclic aromatic hydrocarbons" in Talanta, 76, no. 1 (2008):66-71,
https://doi.org/10.1016/j.talanta.2008.02.004 . .
11
16

Neural network prediction of the gas chromatographic separation of polycyclic aromatic hydrocarbons

Sremac, Snežana; Todorović, Žaklina; Popović, Aleksandar R.; Onjia, Antonije E.

(Society of Physical Chemists of Serbia, 2004)

TY  - CONF
AU  - Sremac, Snežana
AU  - Todorović, Žaklina
AU  - Popović, Aleksandar R.
AU  - Onjia, Antonije E.
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9605
AB  - This paper describes the application of artificial neural networks (ANNs) method to the modeling of 13 polycyclic aromatic hydrocarbons (PAHs)retentionsin temperature - programmed gas chromatography.The ANN method used resulted in relatively good agreement (RMStesting = 0.018) between the measured and the predicted retention times for 13 PAHs. Somewhat higher discrepancy in prediction was observed for the late – eluted PAHs at lower temperature ramps.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2004: 7th international conference on fundemental and applied aspract of physical chemistry
T1  - Neural network prediction of the gas chromatographic separation of polycyclic aromatic hydrocarbons
VL  - 2
SP  - 865
EP  - 867
ER  - 
@conference{
author = "Sremac, Snežana and Todorović, Žaklina and Popović, Aleksandar R. and Onjia, Antonije E.",
year = "2004",
abstract = "This paper describes the application of artificial neural networks (ANNs) method to the modeling of 13 polycyclic aromatic hydrocarbons (PAHs)retentionsin temperature - programmed gas chromatography.The ANN method used resulted in relatively good agreement (RMStesting = 0.018) between the measured and the predicted retention times for 13 PAHs. Somewhat higher discrepancy in prediction was observed for the late – eluted PAHs at lower temperature ramps.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2004: 7th international conference on fundemental and applied aspract of physical chemistry",
title = "Neural network prediction of the gas chromatographic separation of polycyclic aromatic hydrocarbons",
volume = "2",
pages = "865-867"
}
Sremac, S., Todorović, Ž., Popović, A. R.,& Onjia, A. E.. (2004). Neural network prediction of the gas chromatographic separation of polycyclic aromatic hydrocarbons. in Physical chemistry 2004: 7th international conference on fundemental and applied aspract of physical chemistry
Society of Physical Chemists of Serbia., 2, 865-867.
Sremac S, Todorović Ž, Popović AR, Onjia AE. Neural network prediction of the gas chromatographic separation of polycyclic aromatic hydrocarbons. in Physical chemistry 2004: 7th international conference on fundemental and applied aspract of physical chemistry. 2004;2:865-867..
Sremac, Snežana, Todorović, Žaklina, Popović, Aleksandar R., Onjia, Antonije E., "Neural network prediction of the gas chromatographic separation of polycyclic aromatic hydrocarbons" in Physical chemistry 2004: 7th international conference on fundemental and applied aspract of physical chemistry, 2 (2004):865-867.

Determination of the point of zero charge of alumina by batch equilibration method

Todorović, Žaklina N.; Milonjić, Slobodan K.

(Society of Physical Chemists of Serbia, 2004)

TY  - CONF
AU  - Todorović, Žaklina N.
AU  - Milonjić, Slobodan K.
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9592
AB  - In this work we present the points of zero charge, pHpzc, of five commercial alumina samples, of an alumina/solution ratio of 0.100g/25 ml, obtained by batch equilibration method. As an inert electrolyte, KNO3 of 0.001 - 0.1 moldm-3 concentration was used. The obtained points of zero charge values are about 7 and they are independent of KNO3 concentration, except the sample labeled as ICN (Alumina B). In this case, the increase in electrolyte concentration (from 0.001 to 0.1 moldm-3) leads to a decrease in pHpzc (from 7.5 to 6.7) indicating specific sorption of K+ ions on the sample.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2004: 7th international conference on fundemental and applied aspract of physical chemistry
T1  - Determination of the point of zero charge of alumina by batch equilibration method
VL  - 2
SP  - 742
EP  - 744
ER  - 
@conference{
author = "Todorović, Žaklina N. and Milonjić, Slobodan K.",
year = "2004",
abstract = "In this work we present the points of zero charge, pHpzc, of five commercial alumina samples, of an alumina/solution ratio of 0.100g/25 ml, obtained by batch equilibration method. As an inert electrolyte, KNO3 of 0.001 - 0.1 moldm-3 concentration was used. The obtained points of zero charge values are about 7 and they are independent of KNO3 concentration, except the sample labeled as ICN (Alumina B). In this case, the increase in electrolyte concentration (from 0.001 to 0.1 moldm-3) leads to a decrease in pHpzc (from 7.5 to 6.7) indicating specific sorption of K+ ions on the sample.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2004: 7th international conference on fundemental and applied aspract of physical chemistry",
title = "Determination of the point of zero charge of alumina by batch equilibration method",
volume = "2",
pages = "742-744"
}
Todorović, Ž. N.,& Milonjić, S. K.. (2004). Determination of the point of zero charge of alumina by batch equilibration method. in Physical chemistry 2004: 7th international conference on fundemental and applied aspract of physical chemistry
Society of Physical Chemists of Serbia., 2, 742-744.
Todorović ŽN, Milonjić SK. Determination of the point of zero charge of alumina by batch equilibration method. in Physical chemistry 2004: 7th international conference on fundemental and applied aspract of physical chemistry. 2004;2:742-744..
Todorović, Žaklina N., Milonjić, Slobodan K., "Determination of the point of zero charge of alumina by batch equilibration method" in Physical chemistry 2004: 7th international conference on fundemental and applied aspract of physical chemistry, 2 (2004):742-744.

The influence of the solid/liquid ratio on the point of zero charge of alumina

Todorović, Žaklina; Milonjić, Slobodan K.; Dondur, Vera

(2004)

TY  - JOUR
AU  - Todorović, Žaklina
AU  - Milonjić, Slobodan K.
AU  - Dondur, Vera
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6433
AB  - The point of zero charge (pH(pzc)) of three samples of commercial aluminum oxide in aqueous KNO3 (10(-3) - 10(-1) mol/dm(3)) solution was investigated using batch equilibration, mass titration and acid-base titration methods. Structural and chemical characteristics of the alumina samples were determined by X-ray diffraction (XRD) and energy-dispersive X-ray fluorescence spectroscopy (EDXRFS). The obtained pH(pzc) values (5 to 8.5) dependent on the alumina/solution ratio increase with increasing ratio to a constant value. The concentration of dissolved aluminum ions as a function of solution pH (pH = 3.5 - 11) exhibit a parabolic trend, with the minimum solubility at pHpzc.
T2  - Materials Science Forum
T1  - The influence of the solid/liquid ratio on the point of zero charge of alumina
VL  - 453-454
SP  - 361
EP  - 366
ER  - 
@article{
author = "Todorović, Žaklina and Milonjić, Slobodan K. and Dondur, Vera",
year = "2004",
abstract = "The point of zero charge (pH(pzc)) of three samples of commercial aluminum oxide in aqueous KNO3 (10(-3) - 10(-1) mol/dm(3)) solution was investigated using batch equilibration, mass titration and acid-base titration methods. Structural and chemical characteristics of the alumina samples were determined by X-ray diffraction (XRD) and energy-dispersive X-ray fluorescence spectroscopy (EDXRFS). The obtained pH(pzc) values (5 to 8.5) dependent on the alumina/solution ratio increase with increasing ratio to a constant value. The concentration of dissolved aluminum ions as a function of solution pH (pH = 3.5 - 11) exhibit a parabolic trend, with the minimum solubility at pHpzc.",
journal = "Materials Science Forum",
title = "The influence of the solid/liquid ratio on the point of zero charge of alumina",
volume = "453-454",
pages = "361-366"
}
Todorović, Ž., Milonjić, S. K.,& Dondur, V.. (2004). The influence of the solid/liquid ratio on the point of zero charge of alumina. in Materials Science Forum, 453-454, 361-366.
Todorović Ž, Milonjić SK, Dondur V. The influence of the solid/liquid ratio on the point of zero charge of alumina. in Materials Science Forum. 2004;453-454:361-366..
Todorović, Žaklina, Milonjić, Slobodan K., Dondur, Vera, "The influence of the solid/liquid ratio on the point of zero charge of alumina" in Materials Science Forum, 453-454 (2004):361-366.
10

Determination of intrinsic equilibrium constants at an alumina/electrolyte interface

Todorović, Žaklina; Milonjić, Slobodan K.

(2004)

TY  - JOUR
AU  - Todorović, Žaklina
AU  - Milonjić, Slobodan K.
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2858
AB  - Intrinsic ionization and complexation constants at an alumina/electrolyte interface were studied by the site binding model, while the sorption of alkali cations from aqueous solutions was interpreted by the triple-layer model. The surface properties of alumina were investigated by the potentiometric acid-base titration method. The point of zero charge (pH(pzc)) of alumina obtained by this method was found to be 7.2. The obtained mean values of the intrinsic protonation and ionization constants of the surface hydroxyl groups and the intrinsic surface complexation constant, in different electrolytes, are pK(a1)(int) = 4.4, pK(a2)(int) = 9.6 and pK(M+)(int) = 9.5, respectively.
T2  - Journal of the Serbian Chemical Society
T1  - Determination of intrinsic equilibrium constants at an alumina/electrolyte interface
VL  - 69
IS  - 12
SP  - 1063
EP  - 1072
DO  - 10.2298/JSC0412063T
ER  - 
@article{
author = "Todorović, Žaklina and Milonjić, Slobodan K.",
year = "2004",
abstract = "Intrinsic ionization and complexation constants at an alumina/electrolyte interface were studied by the site binding model, while the sorption of alkali cations from aqueous solutions was interpreted by the triple-layer model. The surface properties of alumina were investigated by the potentiometric acid-base titration method. The point of zero charge (pH(pzc)) of alumina obtained by this method was found to be 7.2. The obtained mean values of the intrinsic protonation and ionization constants of the surface hydroxyl groups and the intrinsic surface complexation constant, in different electrolytes, are pK(a1)(int) = 4.4, pK(a2)(int) = 9.6 and pK(M+)(int) = 9.5, respectively.",
journal = "Journal of the Serbian Chemical Society",
title = "Determination of intrinsic equilibrium constants at an alumina/electrolyte interface",
volume = "69",
number = "12",
pages = "1063-1072",
doi = "10.2298/JSC0412063T"
}
Todorović, Ž.,& Milonjić, S. K.. (2004). Determination of intrinsic equilibrium constants at an alumina/electrolyte interface. in Journal of the Serbian Chemical Society, 69(12), 1063-1072.
https://doi.org/10.2298/JSC0412063T
Todorović Ž, Milonjić SK. Determination of intrinsic equilibrium constants at an alumina/electrolyte interface. in Journal of the Serbian Chemical Society. 2004;69(12):1063-1072.
doi:10.2298/JSC0412063T .
Todorović, Žaklina, Milonjić, Slobodan K., "Determination of intrinsic equilibrium constants at an alumina/electrolyte interface" in Journal of the Serbian Chemical Society, 69, no. 12 (2004):1063-1072,
https://doi.org/10.2298/JSC0412063T . .
13
15

Heavy fragment production in He-4+Th-232 reactions at 0. 65-12.7 GeV

Todorović, Žaklina; Grabez, B; Savovic, S; Jokić, Stevan

(2003)

TY  - JOUR
AU  - Todorović, Žaklina
AU  - Grabez, B
AU  - Savovic, S
AU  - Jokić, Stevan
PY  - 2003
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6379
AB  - The processes of production of heavy fragments in the fission mass region in the interaction of 0.65, 1.74, 5.1, 8.8 and 12.7 GeV He-4 with Th-232 have been analyzed using the polycarbonate track detector Makrofol in the form of a sandwich. The decay channels ending with one, two, or more (three, four) fragments were detected. We have analyzed the events in which at least one heavy fragment (Z GT 20) was registered. Fragments produced in the experiment were identified and an event-by-event model-free analysis was performed in order to separate different production mechanisms. We have identified the events produced in fission, deep spallation and fragmentation processes. The cross-sections and experimental features have been determined for the various reaction mechanisms, and their variation as a function of the incident energy has been investigated. (C) 2003 Elsevier Ltd. All rights reserved.
T2  - Radiation Measurements
T1  - Heavy fragment production in He-4+Th-232 reactions at 0. 65-12.7 GeV
VL  - 36
IS  - 1-6
SP  - 313
EP  - 316
DO  - 10.1016/S1350-4487(03)00142-2
ER  - 
@article{
author = "Todorović, Žaklina and Grabez, B and Savovic, S and Jokić, Stevan",
year = "2003",
abstract = "The processes of production of heavy fragments in the fission mass region in the interaction of 0.65, 1.74, 5.1, 8.8 and 12.7 GeV He-4 with Th-232 have been analyzed using the polycarbonate track detector Makrofol in the form of a sandwich. The decay channels ending with one, two, or more (three, four) fragments were detected. We have analyzed the events in which at least one heavy fragment (Z GT 20) was registered. Fragments produced in the experiment were identified and an event-by-event model-free analysis was performed in order to separate different production mechanisms. We have identified the events produced in fission, deep spallation and fragmentation processes. The cross-sections and experimental features have been determined for the various reaction mechanisms, and their variation as a function of the incident energy has been investigated. (C) 2003 Elsevier Ltd. All rights reserved.",
journal = "Radiation Measurements",
title = "Heavy fragment production in He-4+Th-232 reactions at 0. 65-12.7 GeV",
volume = "36",
number = "1-6",
pages = "313-316",
doi = "10.1016/S1350-4487(03)00142-2"
}
Todorović, Ž., Grabez, B., Savovic, S.,& Jokić, S.. (2003). Heavy fragment production in He-4+Th-232 reactions at 0. 65-12.7 GeV. in Radiation Measurements, 36(1-6), 313-316.
https://doi.org/10.1016/S1350-4487(03)00142-2
Todorović Ž, Grabez B, Savovic S, Jokić S. Heavy fragment production in He-4+Th-232 reactions at 0. 65-12.7 GeV. in Radiation Measurements. 2003;36(1-6):313-316.
doi:10.1016/S1350-4487(03)00142-2 .
Todorović, Žaklina, Grabez, B, Savovic, S, Jokić, Stevan, "Heavy fragment production in He-4+Th-232 reactions at 0. 65-12.7 GeV" in Radiation Measurements, 36, no. 1-6 (2003):313-316,
https://doi.org/10.1016/S1350-4487(03)00142-2 . .

Fission of Pb in the He-4-induced reactions at 0.65-12.7 GeV

Todorović, Žaklina; Savovic, S; Jokić, Stevan; Grabez, B

(2001)

TY  - JOUR
AU  - Todorović, Žaklina
AU  - Savovic, S
AU  - Jokić, Stevan
AU  - Grabez, B
PY  - 2001
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6320
AB  - The fission processes from the interactions of 0.65, 1.74, 5.1, 8.8 and 12.7 GeV He-4 with Pb have been analyzed using the polycarbonate track detector Makrofol in the form of a sandwich. The decay channels ending with one, two, or more (three, four) fragments were detected. We analyzed events in which only two heavy fragments (Z GT 20) are detected, irrespective of the existence of coincident intermediate mass fragments (8 less than or equal to Z less than or equal to 20). Using the correlation between the common observables which characterize fission events, we identified events originated from thermal (soft) fission and more violent processes. Cross sections, angular distributions and excitation energy have been determined for two fission mechanisms, and their variation as a function of the incident energy has been investigated. (C) 2001 Elsevier Science Ltd. All rights reserved.
T2  - Radiation Measurements
T1  - Fission of Pb in the He-4-induced reactions at 0.65-12.7 GeV
VL  - 34
IS  - 1-6
SP  - 231
EP  - 235
DO  - 10.1016/S1350-4487(01)00157-3
ER  - 
@article{
author = "Todorović, Žaklina and Savovic, S and Jokić, Stevan and Grabez, B",
year = "2001",
abstract = "The fission processes from the interactions of 0.65, 1.74, 5.1, 8.8 and 12.7 GeV He-4 with Pb have been analyzed using the polycarbonate track detector Makrofol in the form of a sandwich. The decay channels ending with one, two, or more (three, four) fragments were detected. We analyzed events in which only two heavy fragments (Z GT 20) are detected, irrespective of the existence of coincident intermediate mass fragments (8 less than or equal to Z less than or equal to 20). Using the correlation between the common observables which characterize fission events, we identified events originated from thermal (soft) fission and more violent processes. Cross sections, angular distributions and excitation energy have been determined for two fission mechanisms, and their variation as a function of the incident energy has been investigated. (C) 2001 Elsevier Science Ltd. All rights reserved.",
journal = "Radiation Measurements",
title = "Fission of Pb in the He-4-induced reactions at 0.65-12.7 GeV",
volume = "34",
number = "1-6",
pages = "231-235",
doi = "10.1016/S1350-4487(01)00157-3"
}
Todorović, Ž., Savovic, S., Jokić, S.,& Grabez, B.. (2001). Fission of Pb in the He-4-induced reactions at 0.65-12.7 GeV. in Radiation Measurements, 34(1-6), 231-235.
https://doi.org/10.1016/S1350-4487(01)00157-3
Todorović Ž, Savovic S, Jokić S, Grabez B. Fission of Pb in the He-4-induced reactions at 0.65-12.7 GeV. in Radiation Measurements. 2001;34(1-6):231-235.
doi:10.1016/S1350-4487(01)00157-3 .
Todorović, Žaklina, Savovic, S, Jokić, Stevan, Grabez, B, "Fission of Pb in the He-4-induced reactions at 0.65-12.7 GeV" in Radiation Measurements, 34, no. 1-6 (2001):231-235,
https://doi.org/10.1016/S1350-4487(01)00157-3 . .
1
1
1

Production of fragments with Z GT = 8 in interaction of 12.7 GeV He-4+U, Pb, Au and Ag: track detector study

Todorović, Žaklina; Savovic, S; Jokić, Stevan

(1998)

TY  - JOUR
AU  - Todorović, Žaklina
AU  - Savovic, S
AU  - Jokić, Stevan
PY  - 1998
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2162
AB  - The processes of production of fragments with Z greater than or equal to 8 in the interaction of 12.7 GeV He-4 with U, Pb, Au and Ag have been analyzed using the polycarbonate track detector Makrofol. The sandwich technique was used which enables direct observation of multiply charged fragment emission by a single nucleus. The decay channels ending with one, two, or more (three, four) fragments were detected. A classification scheme based on the multiplicity of heavy fragments with Z GT 20 was used in order to identify the events belonging to the different reaction channels. The cross sections, excitation energies and multiplicities of intermediate-mass fragments 8 less than or equal to Z less than or equal to 20 have been determined for the various reaction mechanisms, and their variation as a function of the target mass has been investigated.
T2  - European Physical Journal A. Hadrons and Nuclei
T1  - Production of fragments with Z GT = 8 in interaction of 12.7 GeV He-4+U, Pb, Au and Ag: track detector study
VL  - 2
IS  - 3
SP  - 295
EP  - 300
DO  - 10.1007/s100500050122
ER  - 
@article{
author = "Todorović, Žaklina and Savovic, S and Jokić, Stevan",
year = "1998",
abstract = "The processes of production of fragments with Z greater than or equal to 8 in the interaction of 12.7 GeV He-4 with U, Pb, Au and Ag have been analyzed using the polycarbonate track detector Makrofol. The sandwich technique was used which enables direct observation of multiply charged fragment emission by a single nucleus. The decay channels ending with one, two, or more (three, four) fragments were detected. A classification scheme based on the multiplicity of heavy fragments with Z GT 20 was used in order to identify the events belonging to the different reaction channels. The cross sections, excitation energies and multiplicities of intermediate-mass fragments 8 less than or equal to Z less than or equal to 20 have been determined for the various reaction mechanisms, and their variation as a function of the target mass has been investigated.",
journal = "European Physical Journal A. Hadrons and Nuclei",
title = "Production of fragments with Z GT = 8 in interaction of 12.7 GeV He-4+U, Pb, Au and Ag: track detector study",
volume = "2",
number = "3",
pages = "295-300",
doi = "10.1007/s100500050122"
}
Todorović, Ž., Savovic, S.,& Jokić, S.. (1998). Production of fragments with Z GT = 8 in interaction of 12.7 GeV He-4+U, Pb, Au and Ag: track detector study. in European Physical Journal A. Hadrons and Nuclei, 2(3), 295-300.
https://doi.org/10.1007/s100500050122
Todorović Ž, Savovic S, Jokić S. Production of fragments with Z GT = 8 in interaction of 12.7 GeV He-4+U, Pb, Au and Ag: track detector study. in European Physical Journal A. Hadrons and Nuclei. 1998;2(3):295-300.
doi:10.1007/s100500050122 .
Todorović, Žaklina, Savovic, S, Jokić, Stevan, "Production of fragments with Z GT = 8 in interaction of 12.7 GeV He-4+U, Pb, Au and Ag: track detector study" in European Physical Journal A. Hadrons and Nuclei, 2, no. 3 (1998):295-300,
https://doi.org/10.1007/s100500050122 . .
5
5
6

Interaction of 12.7 GeV He-4 ions with U, Pb, Au and Ag targets

Todorović, Žaklina; Savovic, S; Jokić, Stevan

(1997)

TY  - JOUR
AU  - Todorović, Žaklina
AU  - Savovic, S
AU  - Jokić, Stevan
PY  - 1997
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6228
AB  - The processes of production of fragments Z greater than or equal to 8 in the interactions of 12.7 GeV He-4 with U, Pb, Au and Ag have been analyzed using the polycarbonate track detector Makrofol. A sandwich technique was used which enables direct evidence for multiple fragment emission by a single nucleus. The decay channels ending with one, two or more (three, four) fragments were detected. A classification scheme based on the multiplicity of heavy fragments M-H (Z GT 20) was used in order to identify events belonging to the different reaction channels. Cross sections, excitation energies and multiplicities of intermediate mass fragments (8 less than or equal to Z less than or equal to 20) have been evaluated for various reaction mechanisms. The experimental features of the fragmentation process have been analyzed as a function of the target mass.
T2  - Radiation Measurements
T1  - Interaction of 12.7 GeV He-4 ions with U, Pb, Au and Ag targets
VL  - 28
IS  - 1-6
SP  - 291
EP  - 296
DO  - 10.1016/S1350-4487(97)00085-1
ER  - 
@article{
author = "Todorović, Žaklina and Savovic, S and Jokić, Stevan",
year = "1997",
abstract = "The processes of production of fragments Z greater than or equal to 8 in the interactions of 12.7 GeV He-4 with U, Pb, Au and Ag have been analyzed using the polycarbonate track detector Makrofol. A sandwich technique was used which enables direct evidence for multiple fragment emission by a single nucleus. The decay channels ending with one, two or more (three, four) fragments were detected. A classification scheme based on the multiplicity of heavy fragments M-H (Z GT 20) was used in order to identify events belonging to the different reaction channels. Cross sections, excitation energies and multiplicities of intermediate mass fragments (8 less than or equal to Z less than or equal to 20) have been evaluated for various reaction mechanisms. The experimental features of the fragmentation process have been analyzed as a function of the target mass.",
journal = "Radiation Measurements",
title = "Interaction of 12.7 GeV He-4 ions with U, Pb, Au and Ag targets",
volume = "28",
number = "1-6",
pages = "291-296",
doi = "10.1016/S1350-4487(97)00085-1"
}
Todorović, Ž., Savovic, S.,& Jokić, S.. (1997). Interaction of 12.7 GeV He-4 ions with U, Pb, Au and Ag targets. in Radiation Measurements, 28(1-6), 291-296.
https://doi.org/10.1016/S1350-4487(97)00085-1
Todorović Ž, Savovic S, Jokić S. Interaction of 12.7 GeV He-4 ions with U, Pb, Au and Ag targets. in Radiation Measurements. 1997;28(1-6):291-296.
doi:10.1016/S1350-4487(97)00085-1 .
Todorović, Žaklina, Savovic, S, Jokić, Stevan, "Interaction of 12.7 GeV He-4 ions with U, Pb, Au and Ag targets" in Radiation Measurements, 28, no. 1-6 (1997):291-296,
https://doi.org/10.1016/S1350-4487(97)00085-1 . .
1
1
1