TY  - JOUR
AU  - Holclajtner-Antunović, Ivanka D.
AU  - Mioč, Ubavka B.
AU  - Todorović, M.
AU  - Jovanović, Zoran M.
AU  - Davidović, Milorad P.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Laušević, Zoran
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4139
AB  - Potassium salts of 12-tungstophosphoric acid with varying amounts of cation, KxH3 - xPW12O40(x = 1, 2, 3) have been prepared and their characteristics investigated by thermal analyses. FT-IR and micro-Raman spectroscopy and SEM-EDS analysis. It was found that the number of replaced protons by potassium ions in the 12-tungstophosphoric acid structure has influence on the presence of different protonic species, their dynamic equilibrium and on the conductivity of salts. The results reported in this study have been applied to improve the structural model of insoluble acidic salts. It is shown that an acidic potassium salt presents a mixture of neutral salt and unreacted acid. The nature of this mixture depends on the number of replaced protons-oxonium ions by cations. Preliminary measurements with synthesized compounds as solid electrolytes in fuel cells have been done, too. (C) 2010 Elsevier Ltd. All rights reserved.
T2  - Materials Research Bulletin
T1  - Characterization of potassium salts of 12-tungstophosphoric acid
VL  - 45
IS  - 11
SP  - 1679
EP  - 1684
DO  - 10.1016/j.materresbull.2010.06.064
ER  - 

@article{
author = "Holclajtner-Antunović, Ivanka D. and Mioč, Ubavka B. and Todorović, M. and Jovanović, Zoran M. and Davidović, Milorad P. and Bajuk-Bogdanović, Danica V. and Laušević, Zoran",
year = "2010",
abstract = "Potassium salts of 12-tungstophosphoric acid with varying amounts of cation, KxH3 - xPW12O40(x = 1, 2, 3) have been prepared and their characteristics investigated by thermal analyses. FT-IR and micro-Raman spectroscopy and SEM-EDS analysis. It was found that the number of replaced protons by potassium ions in the 12-tungstophosphoric acid structure has influence on the presence of different protonic species, their dynamic equilibrium and on the conductivity of salts. The results reported in this study have been applied to improve the structural model of insoluble acidic salts. It is shown that an acidic potassium salt presents a mixture of neutral salt and unreacted acid. The nature of this mixture depends on the number of replaced protons-oxonium ions by cations. Preliminary measurements with synthesized compounds as solid electrolytes in fuel cells have been done, too. (C) 2010 Elsevier Ltd. All rights reserved.",
journal = "Materials Research Bulletin",
title = "Characterization of potassium salts of 12-tungstophosphoric acid",
volume = "45",
number = "11",
pages = "1679-1684",
doi = "10.1016/j.materresbull.2010.06.064"
}

Holclajtner-Antunović, I. D., Mioč, U. B., Todorović, M., Jovanović, Z. M., Davidović, M. P., Bajuk-Bogdanović, D. V.,& Laušević, Z.. (2010). Characterization of potassium salts of 12-tungstophosphoric acid. in Materials Research Bulletin, 45(11), 1679-1684.
https://doi.org/10.1016/j.materresbull.2010.06.064

Holclajtner-Antunović ID, Mioč UB, Todorović M, Jovanović ZM, Davidović MP, Bajuk-Bogdanović DV, Laušević Z. Characterization of potassium salts of 12-tungstophosphoric acid. in Materials Research Bulletin. 2010;45(11):1679-1684.
doi:10.1016/j.materresbull.2010.06.064 .

Holclajtner-Antunović, Ivanka D., Mioč, Ubavka B., Todorović, M., Jovanović, Zoran M., Davidović, Milorad P., Bajuk-Bogdanović, Danica V., Laušević, Zoran, "Characterization of potassium salts of 12-tungstophosphoric acid" in Materials Research Bulletin, 45, no. 11 (2010):1679-1684,
https://doi.org/10.1016/j.materresbull.2010.06.064 . .

TY  - JOUR
AU  - Petrović, A.
AU  - Todorović, M.
AU  - Manojlović, Dragan D.
AU  - Krsmanovic, V. D.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3807
AB  - Samples of various ecochemical types of soil were collected in the region of the future accumulation of Lake Bogovina (Serbia). They were analyzed for ten elements using AAS, GFAAS and ICP. Investigation of the nature of association of heavy metals and identification of their substrates was provided by sequential extraction in five steps by successive extraction of soil samples with different mediums. Besides the acid soluble residual phase, most microelements were extracted in the easily and moderate reducible phases. Correlation between manganese and iron from the second and third phase with trace metals from non-residual phases was provided in order to determine their bioavailability. Besides principal component and cluster analysis, the enrichment factors were provided in order to check the impact of anthropogenic factors on trace elements. Most samples contained trace elements mainly from crustal origin with the exception of cadmium.
T2  - Polish Journal of Environmental Studies
T1  - Speciations of Trace Metals in the Accumulation Bogovina on the Crni Timok River
VL  - 18
IS  - 5
SP  - 873
EP  - 884
UR  - https://hdl.handle.net/21.15107/rcub_vinar_3807
ER  - 

@article{
author = "Petrović, A. and Todorović, M. and Manojlović, Dragan D. and Krsmanovic, V. D.",
year = "2009",
abstract = "Samples of various ecochemical types of soil were collected in the region of the future accumulation of Lake Bogovina (Serbia). They were analyzed for ten elements using AAS, GFAAS and ICP. Investigation of the nature of association of heavy metals and identification of their substrates was provided by sequential extraction in five steps by successive extraction of soil samples with different mediums. Besides the acid soluble residual phase, most microelements were extracted in the easily and moderate reducible phases. Correlation between manganese and iron from the second and third phase with trace metals from non-residual phases was provided in order to determine their bioavailability. Besides principal component and cluster analysis, the enrichment factors were provided in order to check the impact of anthropogenic factors on trace elements. Most samples contained trace elements mainly from crustal origin with the exception of cadmium.",
journal = "Polish Journal of Environmental Studies",
title = "Speciations of Trace Metals in the Accumulation Bogovina on the Crni Timok River",
volume = "18",
number = "5",
pages = "873-884",
url = "https://hdl.handle.net/21.15107/rcub_vinar_3807"
}

Petrović, A., Todorović, M., Manojlović, D. D.,& Krsmanovic, V. D.. (2009). Speciations of Trace Metals in the Accumulation Bogovina on the Crni Timok River. in Polish Journal of Environmental Studies, 18(5), 873-884.
https://hdl.handle.net/21.15107/rcub_vinar_3807

Petrović A, Todorović M, Manojlović DD, Krsmanovic VD. Speciations of Trace Metals in the Accumulation Bogovina on the Crni Timok River. in Polish Journal of Environmental Studies. 2009;18(5):873-884.
https://hdl.handle.net/21.15107/rcub_vinar_3807 .

Petrović, A., Todorović, M., Manojlović, Dragan D., Krsmanovic, V. D., "Speciations of Trace Metals in the Accumulation Bogovina on the Crni Timok River" in Polish Journal of Environmental Studies, 18, no. 5 (2009):873-884,
https://hdl.handle.net/21.15107/rcub_vinar_3807 .

TY  - JOUR
AU  - Todorović, Danijela V.
AU  - Petrović, Ivan M.
AU  - Todorović, M.
AU  - Cuttone, Giacomo
AU  - Ristić-Fira, Aleksandra
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3573
AB  - The effects of irradiation with gamma rays and protons on HTB140 human melanoma cell morphology and viability were analyzed. Exponentially growing cells were irradiated close to the Bragg peak maximum of the 62-MeV proton beam, as well as with (60)Co gamma rays, with doses ranging from 8 to 24 Gy. The overall cell morphology was unchanged 6 and 48 h after gamma irradiation, also showing a relatively weak cell-inactivation level. After exposure to proton beam, considerable changes in cell morphology followed by stronger cell inactivation were achieved. Proliferation capacity of irradiated cells significantly decreased in both experimental set-ups. Higher ionization level of protons with respect to gamma rays, representing the main physical difference between these two types of radiation, was also revealed on the cell membrane level through larger pro-apoptotic capacity of protons.
T2  - Journal of Microscopy, Oxford
T1  - Early effects of gamma rays and protons on human melanoma cell viability and morphology
VL  - 232
IS  - 3
SP  - 517
EP  - 521
DO  - 10.1111/j.1365-2818.2008.02151.x
ER  - 

@article{
author = "Todorović, Danijela V. and Petrović, Ivan M. and Todorović, M. and Cuttone, Giacomo and Ristić-Fira, Aleksandra",
year = "2008",
abstract = "The effects of irradiation with gamma rays and protons on HTB140 human melanoma cell morphology and viability were analyzed. Exponentially growing cells were irradiated close to the Bragg peak maximum of the 62-MeV proton beam, as well as with (60)Co gamma rays, with doses ranging from 8 to 24 Gy. The overall cell morphology was unchanged 6 and 48 h after gamma irradiation, also showing a relatively weak cell-inactivation level. After exposure to proton beam, considerable changes in cell morphology followed by stronger cell inactivation were achieved. Proliferation capacity of irradiated cells significantly decreased in both experimental set-ups. Higher ionization level of protons with respect to gamma rays, representing the main physical difference between these two types of radiation, was also revealed on the cell membrane level through larger pro-apoptotic capacity of protons.",
journal = "Journal of Microscopy, Oxford",
title = "Early effects of gamma rays and protons on human melanoma cell viability and morphology",
volume = "232",
number = "3",
pages = "517-521",
doi = "10.1111/j.1365-2818.2008.02151.x"
}

Todorović, D. V., Petrović, I. M., Todorović, M., Cuttone, G.,& Ristić-Fira, A.. (2008). Early effects of gamma rays and protons on human melanoma cell viability and morphology. in Journal of Microscopy, Oxford, 232(3), 517-521.
https://doi.org/10.1111/j.1365-2818.2008.02151.x

Todorović DV, Petrović IM, Todorović M, Cuttone G, Ristić-Fira A. Early effects of gamma rays and protons on human melanoma cell viability and morphology. in Journal of Microscopy, Oxford. 2008;232(3):517-521.
doi:10.1111/j.1365-2818.2008.02151.x .

Todorović, Danijela V., Petrović, Ivan M., Todorović, M., Cuttone, Giacomo, Ristić-Fira, Aleksandra, "Early effects of gamma rays and protons on human melanoma cell viability and morphology" in Journal of Microscopy, Oxford, 232, no. 3 (2008):517-521,
https://doi.org/10.1111/j.1365-2818.2008.02151.x . .

TY  - JOUR
AU  - Uskoković-Marković, S.
AU  - Todorović, M.
AU  - Mioč, Ubavka B.
AU  - Holclajtner-Antunović, Ivanka D.
AU  - Andrić, Velibor
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3084
AB  - In this study, we have developed a sensitive, rapid and simple procedure for the energy dispersive X-ray fluorescence (EDXRF) spectrometry measurement of tungsten in tobacco plant parts. Only 0.1 g of dried plant material is needed instead of the usual I g. EDXRF spectrometry is used for quantitative measurement, after the foliar application of solutions of tungstophosphoric acid (WPA), its magnesium salt and compounds with glycine (Gly) and alanine (Ala), in exact quantities. After that, the leaves, trunks and summits were collected and prepared separately. Tungsten is determined directly in raw dried material, and the overlap of the tungsten peak with zincs that is present is avoided by the spectral deconvolution to obtain quantitative results. The prepared dry tablets weighed 100 mg, and measurement time was 2000 s. The radioisotope excitation source used was Cd-109 and tungsten was identified and quantified at the L-alpha 1 and L-alpha 2 lines at the energies of 8397.6eV and 8335.2eV, respectively. EDXRF spectrometry was applied in a wide range of concentrations (up to 2000 mg/kg), with an estimated detection concentration limit of 15 mg/kg, calculated on dried material. Quantitative analysis of different parts of the treated plant plus the washings gave 94.47% recovery of the applied tungsten in different compound forms. After the foliar application of investigated WPA compounds, there were noticed both vertical and horizontal distributions of tungsten through out the tobacco plants, according to the EDXRF spectrometry results. This conclusion is also in agreement with the positive effects of WPA on Tobacco mosaic tobamovirus (TMV) infection of Nicotiana tabacum (Solanaceae). (c) 2006 Elsevier B.V. All rights reserved.
T2  - Talanta
T1  - EDXRF spectrometry determination of tungsten in tobacco plants after antiviral treatment with 12-tungstophosphoric acid and its compounds
VL  - 70
IS  - 2
SP  - 301
EP  - 306
DO  - 10.1016/j.talanta.2006.02.041
ER  - 

@article{
author = "Uskoković-Marković, S. and Todorović, M. and Mioč, Ubavka B. and Holclajtner-Antunović, Ivanka D. and Andrić, Velibor",
year = "2006",
abstract = "In this study, we have developed a sensitive, rapid and simple procedure for the energy dispersive X-ray fluorescence (EDXRF) spectrometry measurement of tungsten in tobacco plant parts. Only 0.1 g of dried plant material is needed instead of the usual I g. EDXRF spectrometry is used for quantitative measurement, after the foliar application of solutions of tungstophosphoric acid (WPA), its magnesium salt and compounds with glycine (Gly) and alanine (Ala), in exact quantities. After that, the leaves, trunks and summits were collected and prepared separately. Tungsten is determined directly in raw dried material, and the overlap of the tungsten peak with zincs that is present is avoided by the spectral deconvolution to obtain quantitative results. The prepared dry tablets weighed 100 mg, and measurement time was 2000 s. The radioisotope excitation source used was Cd-109 and tungsten was identified and quantified at the L-alpha 1 and L-alpha 2 lines at the energies of 8397.6eV and 8335.2eV, respectively. EDXRF spectrometry was applied in a wide range of concentrations (up to 2000 mg/kg), with an estimated detection concentration limit of 15 mg/kg, calculated on dried material. Quantitative analysis of different parts of the treated plant plus the washings gave 94.47% recovery of the applied tungsten in different compound forms. After the foliar application of investigated WPA compounds, there were noticed both vertical and horizontal distributions of tungsten through out the tobacco plants, according to the EDXRF spectrometry results. This conclusion is also in agreement with the positive effects of WPA on Tobacco mosaic tobamovirus (TMV) infection of Nicotiana tabacum (Solanaceae). (c) 2006 Elsevier B.V. All rights reserved.",
journal = "Talanta",
title = "EDXRF spectrometry determination of tungsten in tobacco plants after antiviral treatment with 12-tungstophosphoric acid and its compounds",
volume = "70",
number = "2",
pages = "301-306",
doi = "10.1016/j.talanta.2006.02.041"
}

Uskoković-Marković, S., Todorović, M., Mioč, U. B., Holclajtner-Antunović, I. D.,& Andrić, V.. (2006). EDXRF spectrometry determination of tungsten in tobacco plants after antiviral treatment with 12-tungstophosphoric acid and its compounds. in Talanta, 70(2), 301-306.
https://doi.org/10.1016/j.talanta.2006.02.041

Uskoković-Marković S, Todorović M, Mioč UB, Holclajtner-Antunović ID, Andrić V. EDXRF spectrometry determination of tungsten in tobacco plants after antiviral treatment with 12-tungstophosphoric acid and its compounds. in Talanta. 2006;70(2):301-306.
doi:10.1016/j.talanta.2006.02.041 .

Uskoković-Marković, S., Todorović, M., Mioč, Ubavka B., Holclajtner-Antunović, Ivanka D., Andrić, Velibor, "EDXRF spectrometry determination of tungsten in tobacco plants after antiviral treatment with 12-tungstophosphoric acid and its compounds" in Talanta, 70, no. 2 (2006):301-306,
https://doi.org/10.1016/j.talanta.2006.02.041 . .