TY  - CONF
AU  - Ali Sartoro, M.C.
AU  - Anagnostakis, M.J.
AU  - Boshkova, T.
AU  - Camacho, A.
AU  - Fornaciari Iljadica, M.C.
AU  - Collins, S.M.
AU  - Dias Peres, R.
AU  - Delgado, J.U
AU  - Đurašević, Mirjana
AU  - Dutch M.A.
AU  - Gomes R.S.
AU  - Gudelis A.
AU  - Hernandorena, R.
AU  - Jevremović, Aleksandar
AU  - Kandić, Aleksandar
AU  - Korun, M.
AU  - Bermudes Hurtado, S.
AU  - Laubenstein, M.
AU  - Long, S.
AU  - Margineanu, R.M.
AU  - Mitsios, I.
AU  - Mulas, D.
AU  - Krneta Nikolić, Jelena
AU  - Pantelica,  A.
AU  - Peyres Medina, V.
AU  - Pibida, L.
AU  - Potiriadis, C.
AU  - Silva, R. L.
AU  - Siri, S.
AU  - Šešlak, Bojan
AU  - Verheyen, I.
AU  - Vodenik ,B.
AU  - Vukanac, Ivana
AU  - Weidner, H.
AU  - Zorko, B.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12843
C3  - ICRM : 22nd International Conference on Radionuclide Metrology and its Applications : Book of Abstracts
T1  - Determination of the probability for locating peaks by computerised peak location methods in gamma-ray spectra as a function of the relative peak area uncertainty
SP  - XCIV
EP  - XCIV
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12843
ER  - 

@conference{
author = "Ali Sartoro, M.C. and Anagnostakis, M.J. and Boshkova, T. and Camacho, A. and Fornaciari Iljadica, M.C. and Collins, S.M. and Dias Peres, R. and Delgado, J.U and Đurašević, Mirjana and Dutch M.A. and Gomes R.S. and Gudelis A. and Hernandorena, R. and Jevremović, Aleksandar and Kandić, Aleksandar and Korun, M. and Bermudes Hurtado, S. and Laubenstein, M. and Long, S. and Margineanu, R.M. and Mitsios, I. and Mulas, D. and Krneta Nikolić, Jelena and Pantelica,  A. and Peyres Medina, V. and Pibida, L. and Potiriadis, C. and Silva, R. L. and Siri, S. and Šešlak, Bojan and Verheyen, I. and Vodenik ,B. and Vukanac, Ivana and Weidner, H. and Zorko, B.",
year = "2019",
journal = "ICRM : 22nd International Conference on Radionuclide Metrology and its Applications : Book of Abstracts",
title = "Determination of the probability for locating peaks by computerised peak location methods in gamma-ray spectra as a function of the relative peak area uncertainty",
pages = "XCIV-XCIV",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12843"
}

Ali Sartoro, M.C., Anagnostakis, M.J., Boshkova, T., Camacho, A., Fornaciari Iljadica, M.C., Collins, S.M., Dias Peres, R., Delgado, J.U, Đurašević, M., Dutch M.A., Gomes R.S., Gudelis A., Hernandorena, R., Jevremović, A., Kandić, A., Korun, M., Bermudes Hurtado, S., Laubenstein, M., Long, S., Margineanu, R.M., Mitsios, I., Mulas, D., Krneta Nikolić, J., Pantelica, A., Peyres Medina, V., Pibida, L., Potiriadis, C., Silva, R. L., Siri, S., Šešlak, B., Verheyen, I., Vodenik , B., Vukanac, I., Weidner, H.,& Zorko, B.. (2019). Determination of the probability for locating peaks by computerised peak location methods in gamma-ray spectra as a function of the relative peak area uncertainty. in ICRM : 22nd International Conference on Radionuclide Metrology and its Applications : Book of Abstracts, XCIV-XCIV.
https://hdl.handle.net/21.15107/rcub_vinar_12843

Ali Sartoro M, Anagnostakis M, Boshkova T, Camacho A, Fornaciari Iljadica M, Collins S, Dias Peres R, Delgado J, Đurašević M, Dutch M.A., Gomes R.S., Gudelis A., Hernandorena R, Jevremović A, Kandić A, Korun M, Bermudes Hurtado S, Laubenstein M, Long S, Margineanu R, Mitsios I, Mulas D, Krneta Nikolić J, Pantelica A, Peyres Medina V, Pibida L, Potiriadis C, Silva RL, Siri S, Šešlak B, Verheyen I, Vodenik  B, Vukanac I, Weidner H, Zorko B. Determination of the probability for locating peaks by computerised peak location methods in gamma-ray spectra as a function of the relative peak area uncertainty. in ICRM : 22nd International Conference on Radionuclide Metrology and its Applications : Book of Abstracts. 2019;:XCIV-XCIV.
https://hdl.handle.net/21.15107/rcub_vinar_12843 .

Ali Sartoro, M.C., Anagnostakis, M.J., Boshkova, T., Camacho, A., Fornaciari Iljadica, M.C., Collins, S.M., Dias Peres, R., Delgado, J.U, Đurašević, Mirjana, Dutch M.A., Gomes R.S., Gudelis A., Hernandorena, R., Jevremović, Aleksandar, Kandić, Aleksandar, Korun, M., Bermudes Hurtado, S., Laubenstein, M., Long, S., Margineanu, R.M., Mitsios, I., Mulas, D., Krneta Nikolić, Jelena, Pantelica,  A., Peyres Medina, V., Pibida, L., Potiriadis, C., Silva, R. L., Siri, S., Šešlak, Bojan, Verheyen, I., Vodenik ,B., Vukanac, Ivana, Weidner, H., Zorko, B., "Determination of the probability for locating peaks by computerised peak location methods in gamma-ray spectra as a function of the relative peak area uncertainty" in ICRM : 22nd International Conference on Radionuclide Metrology and its Applications : Book of Abstracts (2019):XCIV-XCIV,
https://hdl.handle.net/21.15107/rcub_vinar_12843 .

TY  - CONF
AU  - Đurašević, Mirjana
AU  - Vukanac, Ivana
AU  - Kandić, Aleksandar
AU  - Jevremović, Aleksandar M.
AU  - Šešlak, Bojan
AU  - Bruggeman, M.
AU  - Collins, S.
AU  - Done, L.
AU  - Duch, M.
AU  - Gudelis, A.
AU  - Hyža, M.
AU  - Korun, M.
AU  - Ilie, S.
AU  - Lee, K.
AU  - Luca, A.
AU  - Margineanu, R.
AU  - Pantelica, A.
AU  - Serrano, A.
AU  - Turgulan, L.
AU  - Verheyen, L.
AU  - Vodenik, B.
AU  - Zeng, Z.
AU  - Zorko, B.
AU  - Lee, J.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12831
C3  - ICRM 2017 : 21st International Conference on Radionuclide Metrology and its Applications : Book of Abstracts
T1  - Systematic influences on the areas of peaks in gamma-ray spectra, having a large statistical uncertainty
SP  - 48
EP  - 48
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12831
ER  - 

@conference{
author = "Đurašević, Mirjana and Vukanac, Ivana and Kandić, Aleksandar and Jevremović, Aleksandar M. and Šešlak, Bojan and Bruggeman, M. and Collins, S. and Done, L. and Duch, M. and Gudelis, A. and Hyža, M. and Korun, M. and Ilie, S. and Lee, K. and Luca, A. and Margineanu, R. and Pantelica, A. and Serrano, A. and Turgulan, L. and Verheyen, L. and Vodenik, B. and Zeng, Z. and Zorko, B. and Lee, J.",
year = "2017",
journal = "ICRM 2017 : 21st International Conference on Radionuclide Metrology and its Applications : Book of Abstracts",
title = "Systematic influences on the areas of peaks in gamma-ray spectra, having a large statistical uncertainty",
pages = "48-48",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12831"
}

Đurašević, M., Vukanac, I., Kandić, A., Jevremović, A. M., Šešlak, B., Bruggeman, M., Collins, S., Done, L., Duch, M., Gudelis, A., Hyža, M., Korun, M., Ilie, S., Lee, K., Luca, A., Margineanu, R., Pantelica, A., Serrano, A., Turgulan, L., Verheyen, L., Vodenik, B., Zeng, Z., Zorko, B.,& Lee, J.. (2017). Systematic influences on the areas of peaks in gamma-ray spectra, having a large statistical uncertainty. in ICRM 2017 : 21st International Conference on Radionuclide Metrology and its Applications : Book of Abstracts, 48-48.
https://hdl.handle.net/21.15107/rcub_vinar_12831

Đurašević M, Vukanac I, Kandić A, Jevremović AM, Šešlak B, Bruggeman M, Collins S, Done L, Duch M, Gudelis A, Hyža M, Korun M, Ilie S, Lee K, Luca A, Margineanu R, Pantelica A, Serrano A, Turgulan L, Verheyen L, Vodenik B, Zeng Z, Zorko B, Lee J. Systematic influences on the areas of peaks in gamma-ray spectra, having a large statistical uncertainty. in ICRM 2017 : 21st International Conference on Radionuclide Metrology and its Applications : Book of Abstracts. 2017;:48-48.
https://hdl.handle.net/21.15107/rcub_vinar_12831 .

Đurašević, Mirjana, Vukanac, Ivana, Kandić, Aleksandar, Jevremović, Aleksandar M., Šešlak, Bojan, Bruggeman, M., Collins, S., Done, L., Duch, M., Gudelis, A., Hyža, M., Korun, M., Ilie, S., Lee, K., Luca, A., Margineanu, R., Pantelica, A., Serrano, A., Turgulan, L., Verheyen, L., Vodenik, B., Zeng, Z., Zorko, B., Lee, J., "Systematic influences on the areas of peaks in gamma-ray spectra, having a large statistical uncertainty" in ICRM 2017 : 21st International Conference on Radionuclide Metrology and its Applications : Book of Abstracts (2017):48-48,
https://hdl.handle.net/21.15107/rcub_vinar_12831 .

TY  - CONF
AU  - Kandić, Aleksandar
AU  - Šešlak, Bojan
AU  - Vukanac, Ivana
AU  - Đurašević, Mirjana
AU  - Jevremović, Aleksandar M.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12832
C3  - ICRM 2017 : 21st International Conference on Radionuclide Metrology and its Applications : Proceedings
T1  - Coincidence summing corrections factors for volume 60Co sources measured by scintillation NaI(Tl) spectrometers
VL  - 2
SP  - 18
EP  - 21
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12832
ER  - 

@conference{
author = "Kandić, Aleksandar and Šešlak, Bojan and Vukanac, Ivana and Đurašević, Mirjana and Jevremović, Aleksandar M.",
year = "2017",
journal = "ICRM 2017 : 21st International Conference on Radionuclide Metrology and its Applications : Proceedings",
title = "Coincidence summing corrections factors for volume 60Co sources measured by scintillation NaI(Tl) spectrometers",
volume = "2",
pages = "18-21",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12832"
}

Kandić, A., Šešlak, B., Vukanac, I., Đurašević, M.,& Jevremović, A. M.. (2017). Coincidence summing corrections factors for volume 60Co sources measured by scintillation NaI(Tl) spectrometers. in ICRM 2017 : 21st International Conference on Radionuclide Metrology and its Applications : Proceedings, 2, 18-21.
https://hdl.handle.net/21.15107/rcub_vinar_12832

Kandić A, Šešlak B, Vukanac I, Đurašević M, Jevremović AM. Coincidence summing corrections factors for volume 60Co sources measured by scintillation NaI(Tl) spectrometers. in ICRM 2017 : 21st International Conference on Radionuclide Metrology and its Applications : Proceedings. 2017;2:18-21.
https://hdl.handle.net/21.15107/rcub_vinar_12832 .

Kandić, Aleksandar, Šešlak, Bojan, Vukanac, Ivana, Đurašević, Mirjana, Jevremović, Aleksandar M., "Coincidence summing corrections factors for volume 60Co sources measured by scintillation NaI(Tl) spectrometers" in ICRM 2017 : 21st International Conference on Radionuclide Metrology and its Applications : Proceedings, 2 (2017):18-21,
https://hdl.handle.net/21.15107/rcub_vinar_12832 .

TY  - CONF
AU  - Đurašević, Mirjana
AU  - Milinčić, Miroljub A.
AU  - Kandić, Aleksandar
AU  - Vukanac, Ivana
AU  - Šešlak, Bojan
AU  - Lončar, Aleksandra
AU  - Lončar, Boris B.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12820
AB  - Naturally occurring radionuclide (uranium, actinium and thorium series and 40K) are widespread in the environment. In addition, significant amount of 137Cs may also be present in the soil as a result of accidents, such as Chernobyl accident. Thus, monitoring of radionuclides content in soil is of great importance. Aleksandrovac is small town in the western part of central Serbia and Župa is identified as the administrative territory of Aleksandrovac municipality. Nature of Aleksandrovačka Župa is under the long-lasting influence of anthropogenic factors, and therefore dominates altered natural landscape. Activity concentration of 226Ra, 232Th, 40K and 137Cs in 26 soil samples collected from different location in the territory of Aleksandrovačka Župa were determined and presented. All soil samples were milled and sealed in 0.5 l Marinelli beakers, and stored for six weeks in order to reach radioactive equilibrium between 226Ra and its descendants. All samples were measured by means of coaxial semiconductor HPGe detector (ORTEC GEM-30, 37% relative efficiency and 1.8 keV resolution for 60Co at 1332 keV line). The detector was calibrated using the standards in the same geometry spiked with common mixture of gamma-ray emitters certified by Czech Metrological Institute. The activity concentrations of radionuclides 40K and 137Cs in soil samples were determined directly by analyzing full-energy peaks of their principal energies at 1460.83 keV and 661.66 keV, respectively. The activity of 40K was corrected for the contribution of 228Ac (1459.14 keV). The activity of 226Ra was determined by analyzing full-energy peak at 186.21 keV, corrected for the contribution of 235U (185.72 keV) evaluated via 235U photo-peak at 143.77 keV and additionally approved by analyzing activity concentrations of its descendants (214Bi and 214Pb). Furthermore, the activity concentration of 232Th was determined by using the evaluated activity of its descendants (228Ac, 212Bi, 212Pb, and 208Tl). All obtained activity concentrations were corrected for the coincidence summing effect, applying the calculation method of Debertin and Schötzig (1990).
PB  - Niš : RAD Association
C3  - RAD 2015 : International Conference on Radiation and Applications in Various Fields of Research : Book of abstracts
T1  - Analysis of radionuclides content in soil samples from area of Aleksandrovačka Župa, Serbia
SP  - 546
EP  - 546
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12820
ER  - 

@conference{
author = "Đurašević, Mirjana and Milinčić, Miroljub A. and Kandić, Aleksandar and Vukanac, Ivana and Šešlak, Bojan and Lončar, Aleksandra and Lončar, Boris B.",
year = "2015",
abstract = "Naturally occurring radionuclide (uranium, actinium and thorium series and 40K) are widespread in the environment. In addition, significant amount of 137Cs may also be present in the soil as a result of accidents, such as Chernobyl accident. Thus, monitoring of radionuclides content in soil is of great importance. Aleksandrovac is small town in the western part of central Serbia and Župa is identified as the administrative territory of Aleksandrovac municipality. Nature of Aleksandrovačka Župa is under the long-lasting influence of anthropogenic factors, and therefore dominates altered natural landscape. Activity concentration of 226Ra, 232Th, 40K and 137Cs in 26 soil samples collected from different location in the territory of Aleksandrovačka Župa were determined and presented. All soil samples were milled and sealed in 0.5 l Marinelli beakers, and stored for six weeks in order to reach radioactive equilibrium between 226Ra and its descendants. All samples were measured by means of coaxial semiconductor HPGe detector (ORTEC GEM-30, 37% relative efficiency and 1.8 keV resolution for 60Co at 1332 keV line). The detector was calibrated using the standards in the same geometry spiked with common mixture of gamma-ray emitters certified by Czech Metrological Institute. The activity concentrations of radionuclides 40K and 137Cs in soil samples were determined directly by analyzing full-energy peaks of their principal energies at 1460.83 keV and 661.66 keV, respectively. The activity of 40K was corrected for the contribution of 228Ac (1459.14 keV). The activity of 226Ra was determined by analyzing full-energy peak at 186.21 keV, corrected for the contribution of 235U (185.72 keV) evaluated via 235U photo-peak at 143.77 keV and additionally approved by analyzing activity concentrations of its descendants (214Bi and 214Pb). Furthermore, the activity concentration of 232Th was determined by using the evaluated activity of its descendants (228Ac, 212Bi, 212Pb, and 208Tl). All obtained activity concentrations were corrected for the coincidence summing effect, applying the calculation method of Debertin and Schötzig (1990).",
publisher = "Niš : RAD Association",
journal = "RAD 2015 : International Conference on Radiation and Applications in Various Fields of Research : Book of abstracts",
title = "Analysis of radionuclides content in soil samples from area of Aleksandrovačka Župa, Serbia",
pages = "546-546",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12820"
}

Đurašević, M., Milinčić, M. A., Kandić, A., Vukanac, I., Šešlak, B., Lončar, A.,& Lončar, B. B.. (2015). Analysis of radionuclides content in soil samples from area of Aleksandrovačka Župa, Serbia. in RAD 2015 : International Conference on Radiation and Applications in Various Fields of Research : Book of abstracts
Niš : RAD Association., 546-546.
https://hdl.handle.net/21.15107/rcub_vinar_12820

Đurašević M, Milinčić MA, Kandić A, Vukanac I, Šešlak B, Lončar A, Lončar BB. Analysis of radionuclides content in soil samples from area of Aleksandrovačka Župa, Serbia. in RAD 2015 : International Conference on Radiation and Applications in Various Fields of Research : Book of abstracts. 2015;:546-546.
https://hdl.handle.net/21.15107/rcub_vinar_12820 .

Đurašević, Mirjana, Milinčić, Miroljub A., Kandić, Aleksandar, Vukanac, Ivana, Šešlak, Bojan, Lončar, Aleksandra, Lončar, Boris B., "Analysis of radionuclides content in soil samples from area of Aleksandrovačka Župa, Serbia" in RAD 2015 : International Conference on Radiation and Applications in Various Fields of Research : Book of abstracts (2015):546-546,
https://hdl.handle.net/21.15107/rcub_vinar_12820 .

TY  - CONF
AU  - Lončar, Boris
AU  - Đurašević, Mirjana M.
AU  - Kandić, Aleksandar
AU  - Vukanac, Ivana
AU  - Šešlak, Bojan
AU  - Milošević, Zoran
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12830
AB  - The Direct Matrices Multiplication (DMM) method was developed by D. Novkovi as theoretical model for coincidence summing of X-and gamma rays of radionuclides with complex decays schemes. This method enables: a) identification of allpossible decay paths and decay paths outcomes; b)calculation of particular path outcome, probabilities and corresponding energy deposited in the detector; c) determination of theoretical expressions for count rates of single and summing peaks as well as for total count rate, where the unknown quantities are the total and peak detection efficiencies. This method can be applied to the point sources and for small source-to-detector distances. lt was successfully applied to the decay of 13e6", 576o, '338., and 75Se. The DMM method was tested on the equivalence with other methods for calculation of coincidence summing corrections by G. Kanisch, T. Vidmar and O. Sima and a good agreement with the GESPRECOR program was confirmed for point sources of 133Ba, 13aCs and, 152Er. ln the case of the volume sources, calculations of coincidence summing corrections, peak and total efficiencies are more complex than for point sources. Laboratory for Nuclear and Plasma Physics participated in the intercomparison, organized by the Gamma-ray Spectrometry working group of the lnternational Committee for Radionuclide Metrology (ICRM). Volume iorr.", filled by radioactive solution ("'Er, 134Cs) and with different absorbers have been considered. Results obtained by DMM method showed satisfactory agreement with the mean values.
C3  - 3rd European Nuclear Physics Conference (EuNPC2015) : Book of abstracts
T1  - Application of the Direct Matrices Multiplication method in gamma ray spectrometry
SP  - 120
EP  - 120
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12830
ER  - 

@conference{
author = "Lončar, Boris and Đurašević, Mirjana M. and Kandić, Aleksandar and Vukanac, Ivana and Šešlak, Bojan and Milošević, Zoran",
year = "2015",
abstract = "The Direct Matrices Multiplication (DMM) method was developed by D. Novkovi as theoretical model for coincidence summing of X-and gamma rays of radionuclides with complex decays schemes. This method enables: a) identification of allpossible decay paths and decay paths outcomes; b)calculation of particular path outcome, probabilities and corresponding energy deposited in the detector; c) determination of theoretical expressions for count rates of single and summing peaks as well as for total count rate, where the unknown quantities are the total and peak detection efficiencies. This method can be applied to the point sources and for small source-to-detector distances. lt was successfully applied to the decay of 13e6", 576o, '338., and 75Se. The DMM method was tested on the equivalence with other methods for calculation of coincidence summing corrections by G. Kanisch, T. Vidmar and O. Sima and a good agreement with the GESPRECOR program was confirmed for point sources of 133Ba, 13aCs and, 152Er. ln the case of the volume sources, calculations of coincidence summing corrections, peak and total efficiencies are more complex than for point sources. Laboratory for Nuclear and Plasma Physics participated in the intercomparison, organized by the Gamma-ray Spectrometry working group of the lnternational Committee for Radionuclide Metrology (ICRM). Volume iorr.", filled by radioactive solution ("'Er, 134Cs) and with different absorbers have been considered. Results obtained by DMM method showed satisfactory agreement with the mean values.",
journal = "3rd European Nuclear Physics Conference (EuNPC2015) : Book of abstracts",
title = "Application of the Direct Matrices Multiplication method in gamma ray spectrometry",
pages = "120-120",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12830"
}

Lončar, B., Đurašević, M. M., Kandić, A., Vukanac, I., Šešlak, B.,& Milošević, Z.. (2015). Application of the Direct Matrices Multiplication method in gamma ray spectrometry. in 3rd European Nuclear Physics Conference (EuNPC2015) : Book of abstracts, 120-120.
https://hdl.handle.net/21.15107/rcub_vinar_12830

Lončar B, Đurašević MM, Kandić A, Vukanac I, Šešlak B, Milošević Z. Application of the Direct Matrices Multiplication method in gamma ray spectrometry. in 3rd European Nuclear Physics Conference (EuNPC2015) : Book of abstracts. 2015;:120-120.
https://hdl.handle.net/21.15107/rcub_vinar_12830 .

Lončar, Boris, Đurašević, Mirjana M., Kandić, Aleksandar, Vukanac, Ivana, Šešlak, Bojan, Milošević, Zoran, "Application of the Direct Matrices Multiplication method in gamma ray spectrometry" in 3rd European Nuclear Physics Conference (EuNPC2015) : Book of abstracts (2015):120-120,
https://hdl.handle.net/21.15107/rcub_vinar_12830 .

TY  - CONF
AU  - Šešlak, Bojan
AU  - Ujić, Predrag
AU  - Vukanac, Ivana
AU  - Kandić, Aleksandar
AU  - Đurašević, Mirjana
AU  - Čeliković, Igor
AU  - Milošević, Zoran
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12833
PB  - Veszprém, Hungary : Hungarian Biophysical Society
C3  - TREICEP : IV. Terrestrial Radionuclides in Environment International Conference on Environmental Protection : Book of abstracts
T1  - The content of 137Cs and 40K in wood ash
SP  - 4
EP  - 4
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12833
ER  - 

@conference{
author = "Šešlak, Bojan and Ujić, Predrag and Vukanac, Ivana and Kandić, Aleksandar and Đurašević, Mirjana and Čeliković, Igor and Milošević, Zoran",
year = "2014",
publisher = "Veszprém, Hungary : Hungarian Biophysical Society",
journal = "TREICEP : IV. Terrestrial Radionuclides in Environment International Conference on Environmental Protection : Book of abstracts",
title = "The content of 137Cs and 40K in wood ash",
pages = "4-4",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12833"
}

Šešlak, B., Ujić, P., Vukanac, I., Kandić, A., Đurašević, M., Čeliković, I.,& Milošević, Z.. (2014). The content of 137Cs and 40K in wood ash. in TREICEP : IV. Terrestrial Radionuclides in Environment International Conference on Environmental Protection : Book of abstracts
Veszprém, Hungary : Hungarian Biophysical Society., 4-4.
https://hdl.handle.net/21.15107/rcub_vinar_12833

Šešlak B, Ujić P, Vukanac I, Kandić A, Đurašević M, Čeliković I, Milošević Z. The content of 137Cs and 40K in wood ash. in TREICEP : IV. Terrestrial Radionuclides in Environment International Conference on Environmental Protection : Book of abstracts. 2014;:4-4.
https://hdl.handle.net/21.15107/rcub_vinar_12833 .

Šešlak, Bojan, Ujić, Predrag, Vukanac, Ivana, Kandić, Aleksandar, Đurašević, Mirjana, Čeliković, Igor, Milošević, Zoran, "The content of 137Cs and 40K in wood ash" in TREICEP : IV. Terrestrial Radionuclides in Environment International Conference on Environmental Protection : Book of abstracts (2014):4-4,
https://hdl.handle.net/21.15107/rcub_vinar_12833 .

TY  - CONF
AU  - Vukanac, Ivana
AU  - Kandić, Aleksandar
AU  - Đurašević, Mirjana
AU  - Šešlak, Bojan
AU  - Čeliković, Igor
AU  - Jevremović, Aleksandar
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12834
PB  - Veszprém, Hungary : Hungarian Biophysical Society
C3  - TREICEP : IV. Terrestrial Radionuclides in Environment International Conference on Environmental Protection : Book of abstracts
T1  - Radionuclide content in commercially available laundry detergents and assessment of radiological environmental hazards
SP  - 21
EP  - 21
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12834
ER  - 

@conference{
author = "Vukanac, Ivana and Kandić, Aleksandar and Đurašević, Mirjana and Šešlak, Bojan and Čeliković, Igor and Jevremović, Aleksandar",
year = "2014",
publisher = "Veszprém, Hungary : Hungarian Biophysical Society",
journal = "TREICEP : IV. Terrestrial Radionuclides in Environment International Conference on Environmental Protection : Book of abstracts",
title = "Radionuclide content in commercially available laundry detergents and assessment of radiological environmental hazards",
pages = "21-21",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12834"
}

Vukanac, I., Kandić, A., Đurašević, M., Šešlak, B., Čeliković, I.,& Jevremović, A.. (2014). Radionuclide content in commercially available laundry detergents and assessment of radiological environmental hazards. in TREICEP : IV. Terrestrial Radionuclides in Environment International Conference on Environmental Protection : Book of abstracts
Veszprém, Hungary : Hungarian Biophysical Society., 21-21.
https://hdl.handle.net/21.15107/rcub_vinar_12834

Vukanac I, Kandić A, Đurašević M, Šešlak B, Čeliković I, Jevremović A. Radionuclide content in commercially available laundry detergents and assessment of radiological environmental hazards. in TREICEP : IV. Terrestrial Radionuclides in Environment International Conference on Environmental Protection : Book of abstracts. 2014;:21-21.
https://hdl.handle.net/21.15107/rcub_vinar_12834 .

Vukanac, Ivana, Kandić, Aleksandar, Đurašević, Mirjana, Šešlak, Bojan, Čeliković, Igor, Jevremović, Aleksandar, "Radionuclide content in commercially available laundry detergents and assessment of radiological environmental hazards" in TREICEP : IV. Terrestrial Radionuclides in Environment International Conference on Environmental Protection : Book of abstracts (2014):21-21,
https://hdl.handle.net/21.15107/rcub_vinar_12834 .

TY  - CONF
AU  - Đurašević, Mirjana
AU  - Kandić, Aleksandar
AU  - Vukanac, Ivana
AU  - Šešlak, Bojan
AU  - Milošević, Zoran
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12821
AB  - Učešćem u interkomparaciji organizovanoj od strane Gamaspektrometrijske radne grupe u okviru ICRM, već razvijeni teorijski model za potrebe rešavanja problema koincidentnog sumiranja primenjen je na zapreminske izvore. Analizirana je vrlo složena šema 152Eu i formiran sistem jednačina. Rešavanje tako formiranog sistema zahtevalo je uvođenje određenih aproksimacija. U radu su prikazani izračunati korekcioni faktori za geometriju cilindrične PVC kutijice i radionuklid 152Eu u kombinaciji sa bakrom i pleksiglasom kao apsorberom.
AB  - A theoretical model for solving the problem of coincidence summing based on matrix formalism was applied to the volume sources in the intercomparison exercise, organized by the Gamma-spectrometric working group within the International Committee for Radionuclide Metrology. A complex decay scheme of 152Eu was analyzed and the system of equations was formed. Solving this system required the introduction of some approximations. The calculated correction factors for a cylindrical geometry box and radionuclide 152Eu in combination with copper and plexiglas as absorber are presented in this paper.
PB  - Beograd : Institut za nuklearne nauke "Vinča" : Društvo za zaštitu od zračenja Srbije i Crne Gore
C3  - 27. simpozijum DZZSCG : zbornik radova
T1  - Izračunavanje korekcionih faktora za koincidentno sumiranje za 152Eu-zapreminski izvori
T1  - Calculation of coincidence summing correction factors for 152Eu-volume sources
SP  - 427
EP  - 430
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12821
ER  - 

@conference{
author = "Đurašević, Mirjana and Kandić, Aleksandar and Vukanac, Ivana and Šešlak, Bojan and Milošević, Zoran",
year = "2013",
abstract = "Učešćem u interkomparaciji organizovanoj od strane Gamaspektrometrijske radne grupe u okviru ICRM, već razvijeni teorijski model za potrebe rešavanja problema koincidentnog sumiranja primenjen je na zapreminske izvore. Analizirana je vrlo složena šema 152Eu i formiran sistem jednačina. Rešavanje tako formiranog sistema zahtevalo je uvođenje određenih aproksimacija. U radu su prikazani izračunati korekcioni faktori za geometriju cilindrične PVC kutijice i radionuklid 152Eu u kombinaciji sa bakrom i pleksiglasom kao apsorberom., A theoretical model for solving the problem of coincidence summing based on matrix formalism was applied to the volume sources in the intercomparison exercise, organized by the Gamma-spectrometric working group within the International Committee for Radionuclide Metrology. A complex decay scheme of 152Eu was analyzed and the system of equations was formed. Solving this system required the introduction of some approximations. The calculated correction factors for a cylindrical geometry box and radionuclide 152Eu in combination with copper and plexiglas as absorber are presented in this paper.",
publisher = "Beograd : Institut za nuklearne nauke "Vinča" : Društvo za zaštitu od zračenja Srbije i Crne Gore",
journal = "27. simpozijum DZZSCG : zbornik radova",
title = "Izračunavanje korekcionih faktora za koincidentno sumiranje za 152Eu-zapreminski izvori, Calculation of coincidence summing correction factors for 152Eu-volume sources",
pages = "427-430",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12821"
}

Đurašević, M., Kandić, A., Vukanac, I., Šešlak, B.,& Milošević, Z.. (2013). Izračunavanje korekcionih faktora za koincidentno sumiranje za 152Eu-zapreminski izvori. in 27. simpozijum DZZSCG : zbornik radova
Beograd : Institut za nuklearne nauke "Vinča" : Društvo za zaštitu od zračenja Srbije i Crne Gore., 427-430.
https://hdl.handle.net/21.15107/rcub_vinar_12821

Đurašević M, Kandić A, Vukanac I, Šešlak B, Milošević Z. Izračunavanje korekcionih faktora za koincidentno sumiranje za 152Eu-zapreminski izvori. in 27. simpozijum DZZSCG : zbornik radova. 2013;:427-430.
https://hdl.handle.net/21.15107/rcub_vinar_12821 .

Đurašević, Mirjana, Kandić, Aleksandar, Vukanac, Ivana, Šešlak, Bojan, Milošević, Zoran, "Izračunavanje korekcionih faktora za koincidentno sumiranje za 152Eu-zapreminski izvori" in 27. simpozijum DZZSCG : zbornik radova (2013):427-430,
https://hdl.handle.net/21.15107/rcub_vinar_12821 .

TY  - CONF
AU  - Vukanac, Ivana
AU  - Đurašević, Mirjana
AU  - Šešlak, Bojan
AU  - Kandić, Aleksandar
AU  - Milošević, Zoran
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12845
AB  - Laboratorija za nuklearnu i plazma fiziku Instituta „Vinča“, Laboratoriji za metrologiju radionuklida (LMR), ovlašćena je i akreditovana za gamaspektrometrijska ispitivanja sadržaja radionuklida u uzorcima različitog porekla. Da bi se obezbedila tačnost i pouzdanost rezultata merenja, a po zahtevima standarda ISO 17025, vrše se periodična interna etaloniranja HPGe poluprovodničkih spektrometara. Zbog raznovrsnosti uzoraka koji se mere kalibracija se mora izvršiti za više različitih geometrija i matriksa. U većini Laboratorija za ispitivanje radioaktivnosti, zbog specifičnosti ispitivanih uzoraka i geometrija merenja, nedostatka materijalnih sredstava i sl., uglavnom postoji problem adekvatnosti i mogućnosti nabavke komercijalno dostupnih radioaktivnih standarda i referentnih materijala. Program internog etaloniranja se u LMR sprovodi pomoću radnih standarda napravljenih u skladu sa potrebama i iskustvima proizišlim iz dugogodišnje prakse, a pouzdanost merenja proverena je uspešnim učešćem na više međunarodnih interkomparacija i PT šema. Zbog konačnog veka trajanja radioaktivnih standarda, određenog vremenima poluraspada radionuklida prisutnih u standardu, u LMR su u više navrata pripremani setovi radnih standarda pomoću standardnog rastvora miksa radionuklida gama emitera [1], a po proceduri detaljno opisanoj u literaturi [2,3]. U radu će sumarno biti prezentovana iskustva stečena tokom primene procedura pripreme radnih standarda.
AB  - In the Laboratory for Radionuclide Metrology at Vinča Institute, activity concentration measurements are routinely performed and numerous calibration standards are required. Thus, a variety of calibration standards whose measurement geometry and chemical composition and density are similar to those of the measured samples were prepared. The standardized solutions of a common mixture of gamma-emitting radionuclides (241Am, 109Cd, 139Ce, 57Co, 60Co,137Cs, 203Hg, 113Sn, 85Sr, 88Y and 210Pb) purchased at the Czech Metrological Institute were used to prepare working standards for efficiency and energy calibration of gamma-ray semiconductor HPGe spectrometer in accordance with the IAEA recommendations. Calibration standards were prepared in different geometries (PVC cylindrical boxes, Marinelly beakers and PVC cylindrical bottles) and with various matrices (mineralized grass, activated carbon, surface soil, water, sand and ached filter paper). The matrix materials were spiked by using the activated carbon as the activity carrier, and homogenized mechanically. A comprehensive review of the procedures and techniques used for working standard preparation is presented in this paper.
PB  - Zagreb, Croatia : Croatian Radiation Protection Association
C3  - 9th Symposium of the Croatian Radiation Protection Association : Proceedings
T1  - O pripremi radnih standarda u gama spektrometriji
T1  - On the preparation of working standards for gamma-ray spectrometry
SP  - 520
EP  - 525
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12845
ER  - 

@conference{
author = "Vukanac, Ivana and Đurašević, Mirjana and Šešlak, Bojan and Kandić, Aleksandar and Milošević, Zoran",
year = "2013",
abstract = "Laboratorija za nuklearnu i plazma fiziku Instituta „Vinča“, Laboratoriji za metrologiju radionuklida (LMR), ovlašćena je i akreditovana za gamaspektrometrijska ispitivanja sadržaja radionuklida u uzorcima različitog porekla. Da bi se obezbedila tačnost i pouzdanost rezultata merenja, a po zahtevima standarda ISO 17025, vrše se periodična interna etaloniranja HPGe poluprovodničkih spektrometara. Zbog raznovrsnosti uzoraka koji se mere kalibracija se mora izvršiti za više različitih geometrija i matriksa. U većini Laboratorija za ispitivanje radioaktivnosti, zbog specifičnosti ispitivanih uzoraka i geometrija merenja, nedostatka materijalnih sredstava i sl., uglavnom postoji problem adekvatnosti i mogućnosti nabavke komercijalno dostupnih radioaktivnih standarda i referentnih materijala. Program internog etaloniranja se u LMR sprovodi pomoću radnih standarda napravljenih u skladu sa potrebama i iskustvima proizišlim iz dugogodišnje prakse, a pouzdanost merenja proverena je uspešnim učešćem na više međunarodnih interkomparacija i PT šema. Zbog konačnog veka trajanja radioaktivnih standarda, određenog vremenima poluraspada radionuklida prisutnih u standardu, u LMR su u više navrata pripremani setovi radnih standarda pomoću standardnog rastvora miksa radionuklida gama emitera [1], a po proceduri detaljno opisanoj u literaturi [2,3]. U radu će sumarno biti prezentovana iskustva stečena tokom primene procedura pripreme radnih standarda., In the Laboratory for Radionuclide Metrology at Vinča Institute, activity concentration measurements are routinely performed and numerous calibration standards are required. Thus, a variety of calibration standards whose measurement geometry and chemical composition and density are similar to those of the measured samples were prepared. The standardized solutions of a common mixture of gamma-emitting radionuclides (241Am, 109Cd, 139Ce, 57Co, 60Co,137Cs, 203Hg, 113Sn, 85Sr, 88Y and 210Pb) purchased at the Czech Metrological Institute were used to prepare working standards for efficiency and energy calibration of gamma-ray semiconductor HPGe spectrometer in accordance with the IAEA recommendations. Calibration standards were prepared in different geometries (PVC cylindrical boxes, Marinelly beakers and PVC cylindrical bottles) and with various matrices (mineralized grass, activated carbon, surface soil, water, sand and ached filter paper). The matrix materials were spiked by using the activated carbon as the activity carrier, and homogenized mechanically. A comprehensive review of the procedures and techniques used for working standard preparation is presented in this paper.",
publisher = "Zagreb, Croatia : Croatian Radiation Protection Association",
journal = "9th Symposium of the Croatian Radiation Protection Association : Proceedings",
title = "O pripremi radnih standarda u gama spektrometriji, On the preparation of working standards for gamma-ray spectrometry",
pages = "520-525",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12845"
}

Vukanac, I., Đurašević, M., Šešlak, B., Kandić, A.,& Milošević, Z.. (2013). O pripremi radnih standarda u gama spektrometriji. in 9th Symposium of the Croatian Radiation Protection Association : Proceedings
Zagreb, Croatia : Croatian Radiation Protection Association., 520-525.
https://hdl.handle.net/21.15107/rcub_vinar_12845

Vukanac I, Đurašević M, Šešlak B, Kandić A, Milošević Z. O pripremi radnih standarda u gama spektrometriji. in 9th Symposium of the Croatian Radiation Protection Association : Proceedings. 2013;:520-525.
https://hdl.handle.net/21.15107/rcub_vinar_12845 .

Vukanac, Ivana, Đurašević, Mirjana, Šešlak, Bojan, Kandić, Aleksandar, Milošević, Zoran, "O pripremi radnih standarda u gama spektrometriji" in 9th Symposium of the Croatian Radiation Protection Association : Proceedings (2013):520-525,
https://hdl.handle.net/21.15107/rcub_vinar_12845 .

TY  - CONF
AU  - Đurašević, Mirjana
AU  - Kandić, Aleksandar
AU  - Vukanac, Ivana
AU  - Šešlak, Bojan
AU  - Milošević, Zoran
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12822
AB  - Koincidentno sumiranje X i gama zračenja u spektru snimljenom na HPGe detektoru predstavlja jedan od najvažnijih problema u gama spektrometriji, naročito u bliskoj geometriji. Prisutni problem može se rešiti korišćenjem korekcionih faktora za koincidentno sumiranje. Cilj ovog rada je da se prikažu korekcioni faktori dobijeni korišćenjem matematičkog programa EFFTRAN. Korekcioni faktori izračunati su za neke prirodne radionuklide uranovog i torijumovog niza za slučaj geometrije cilindrične PVC kutijice od 200 ml sa matriksom zemlje.
AB  - Coincidence summing of X- and gamma-rays in spectra recorded by HPGe detectors is one of the most important problem in gamma ray spectrometry, especially at low source-detector distance. It could be solved by using coincidence summing correction factors. The aim of this paper is to present the correction factors obtained by using a mathematical program EFFTRAN. All correction factors were calculated for the some natural radionuclides of uranium and thorium series for the 200 ml PVC cylindrical box geometry with soil matrix.
PB  - Beograd : Institut za nuklearne nauke "Vinča" : Društvo za zaštitu od zračenja Srbije i Crne Gore
C3  - 27. simpozijum DZZSCG : zbornik radova
T1  - Proračun korekcionih faktora za koincidentno sumiranje za neke prirordne radionuklide primenom Eftran softvera
T1  - Calculation of coincidence summing correction factors for some natural radionuclides usinG Efftran software
SP  - 431
EP  - 434
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12822
ER  - 

@conference{
author = "Đurašević, Mirjana and Kandić, Aleksandar and Vukanac, Ivana and Šešlak, Bojan and Milošević, Zoran",
year = "2013",
abstract = "Koincidentno sumiranje X i gama zračenja u spektru snimljenom na HPGe detektoru predstavlja jedan od najvažnijih problema u gama spektrometriji, naročito u bliskoj geometriji. Prisutni problem može se rešiti korišćenjem korekcionih faktora za koincidentno sumiranje. Cilj ovog rada je da se prikažu korekcioni faktori dobijeni korišćenjem matematičkog programa EFFTRAN. Korekcioni faktori izračunati su za neke prirodne radionuklide uranovog i torijumovog niza za slučaj geometrije cilindrične PVC kutijice od 200 ml sa matriksom zemlje., Coincidence summing of X- and gamma-rays in spectra recorded by HPGe detectors is one of the most important problem in gamma ray spectrometry, especially at low source-detector distance. It could be solved by using coincidence summing correction factors. The aim of this paper is to present the correction factors obtained by using a mathematical program EFFTRAN. All correction factors were calculated for the some natural radionuclides of uranium and thorium series for the 200 ml PVC cylindrical box geometry with soil matrix.",
publisher = "Beograd : Institut za nuklearne nauke "Vinča" : Društvo za zaštitu od zračenja Srbije i Crne Gore",
journal = "27. simpozijum DZZSCG : zbornik radova",
title = "Proračun korekcionih faktora za koincidentno sumiranje za neke prirordne radionuklide primenom Eftran softvera, Calculation of coincidence summing correction factors for some natural radionuclides usinG Efftran software",
pages = "431-434",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12822"
}

Đurašević, M., Kandić, A., Vukanac, I., Šešlak, B.,& Milošević, Z.. (2013). Proračun korekcionih faktora za koincidentno sumiranje za neke prirordne radionuklide primenom Eftran softvera. in 27. simpozijum DZZSCG : zbornik radova
Beograd : Institut za nuklearne nauke "Vinča" : Društvo za zaštitu od zračenja Srbije i Crne Gore., 431-434.
https://hdl.handle.net/21.15107/rcub_vinar_12822

Đurašević M, Kandić A, Vukanac I, Šešlak B, Milošević Z. Proračun korekcionih faktora za koincidentno sumiranje za neke prirordne radionuklide primenom Eftran softvera. in 27. simpozijum DZZSCG : zbornik radova. 2013;:431-434.
https://hdl.handle.net/21.15107/rcub_vinar_12822 .

Đurašević, Mirjana, Kandić, Aleksandar, Vukanac, Ivana, Šešlak, Bojan, Milošević, Zoran, "Proračun korekcionih faktora za koincidentno sumiranje za neke prirordne radionuklide primenom Eftran softvera" in 27. simpozijum DZZSCG : zbornik radova (2013):431-434,
https://hdl.handle.net/21.15107/rcub_vinar_12822 .

TY  - CONF
AU  - Vukanac, Ivana
AU  - Kandić, Aleksandar
AU  - Đurašević, Mirjana
AU  - Šešlak, Bojan
AU  - Čeliković, Igor
AU  - Milošević, Zoran
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12823
AB  - Three main ingredients of modern laundry detergent or washing powder are builders (50 % by weight, approximately), the alkylbenzenesulfonate surfactant (15 %), and bleaches (7 %). One of the most common builders (water softeners) is sodium triphosphate. Mainly, detergent ingredients have low biodegradation rate in environment resulting in a number of negative effects. Additionally, heavy use of soluble sodium triphosphate eventually discharged into natural waters lead to problem with eutrophication of lakes and streams. Also, phosphate deposits can contain significant amounts of naturally occurring heavy metals (cadmium, lead, nickel, copper, chromium, and uranium). For these reasons wastewater containing phosphate detergents should be directed to the sewerage system. In order to provide a high level of protection of the environment, the European Union introduced regulations to require biodegradability in all detergents in 2004 [1], and intends to ban phosphates in domestic products from 2013 [2]. Presence of the phosphates in sample, in most cases indicates the presence of uranium and its daughter products. In order to perceive the radiological aspect of environmental pollution by wastewater, the analysis of laundry detergent available on Serbian market was undertaken. Measurements were performed by means of HPGe gamma spectrometer (35 % relative efficiency) in accordance with international recommendation [3]. Ten samples were placed in Marinelly bakers, sealed for six weeks and after reaching radioactive equilibrium measured. Total count rates in recorded spectra ranged from 2.32 s-1kg-1 to 3.69 s-1kg-1. Specific activities of 210Pb ranged from 3 to 11.1 Bqkg1, 40K from 1.25 to 22.2 Bqkg-1, 226Ra from 0.1 to 8.6 Bqkg-1; concentrations of 238U and 232Th were up to 6.6 Bqkg-1 and 1.1 Bqkg-1, respectively, while artificial radionuclides were below MDA (137Cs<0.04 Bqkg-1). Analysis of the obtained results showed that laundry detergents mostly used in Serbia have low content of radionuclides, but still considering the quantities used annually (~107 kg), this aspect of environmental pollution through wastewaters can not be neglected. Also, it should be mentioned that in facilities for wastewater treatment during the technological processes involved in water purification, precipitation and accumulation of radioactivity can occur, although the content of radionuclides is not expected to be high.
PB  - University of Niš : Faculty of Electronic Engineering
C3  - RAD 2012 : 1st International Conference on Radiation in Various Fields of Research : Book of abstracts
T1  - Radionuclide content in laundry detergents available in Serbian market
SP  - 162
EP  - 162
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12823
ER  - 

@conference{
author = "Vukanac, Ivana and Kandić, Aleksandar and Đurašević, Mirjana and Šešlak, Bojan and Čeliković, Igor and Milošević, Zoran",
year = "2012",
abstract = "Three main ingredients of modern laundry detergent or washing powder are builders (50 % by weight, approximately), the alkylbenzenesulfonate surfactant (15 %), and bleaches (7 %). One of the most common builders (water softeners) is sodium triphosphate. Mainly, detergent ingredients have low biodegradation rate in environment resulting in a number of negative effects. Additionally, heavy use of soluble sodium triphosphate eventually discharged into natural waters lead to problem with eutrophication of lakes and streams. Also, phosphate deposits can contain significant amounts of naturally occurring heavy metals (cadmium, lead, nickel, copper, chromium, and uranium). For these reasons wastewater containing phosphate detergents should be directed to the sewerage system. In order to provide a high level of protection of the environment, the European Union introduced regulations to require biodegradability in all detergents in 2004 [1], and intends to ban phosphates in domestic products from 2013 [2]. Presence of the phosphates in sample, in most cases indicates the presence of uranium and its daughter products. In order to perceive the radiological aspect of environmental pollution by wastewater, the analysis of laundry detergent available on Serbian market was undertaken. Measurements were performed by means of HPGe gamma spectrometer (35 % relative efficiency) in accordance with international recommendation [3]. Ten samples were placed in Marinelly bakers, sealed for six weeks and after reaching radioactive equilibrium measured. Total count rates in recorded spectra ranged from 2.32 s-1kg-1 to 3.69 s-1kg-1. Specific activities of 210Pb ranged from 3 to 11.1 Bqkg1, 40K from 1.25 to 22.2 Bqkg-1, 226Ra from 0.1 to 8.6 Bqkg-1; concentrations of 238U and 232Th were up to 6.6 Bqkg-1 and 1.1 Bqkg-1, respectively, while artificial radionuclides were below MDA (137Cs<0.04 Bqkg-1). Analysis of the obtained results showed that laundry detergents mostly used in Serbia have low content of radionuclides, but still considering the quantities used annually (~107 kg), this aspect of environmental pollution through wastewaters can not be neglected. Also, it should be mentioned that in facilities for wastewater treatment during the technological processes involved in water purification, precipitation and accumulation of radioactivity can occur, although the content of radionuclides is not expected to be high.",
publisher = "University of Niš : Faculty of Electronic Engineering",
journal = "RAD 2012 : 1st International Conference on Radiation in Various Fields of Research : Book of abstracts",
title = "Radionuclide content in laundry detergents available in Serbian market",
pages = "162-162",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12823"
}

Vukanac, I., Kandić, A., Đurašević, M., Šešlak, B., Čeliković, I.,& Milošević, Z.. (2012). Radionuclide content in laundry detergents available in Serbian market. in RAD 2012 : 1st International Conference on Radiation in Various Fields of Research : Book of abstracts
University of Niš : Faculty of Electronic Engineering., 162-162.
https://hdl.handle.net/21.15107/rcub_vinar_12823

Vukanac I, Kandić A, Đurašević M, Šešlak B, Čeliković I, Milošević Z. Radionuclide content in laundry detergents available in Serbian market. in RAD 2012 : 1st International Conference on Radiation in Various Fields of Research : Book of abstracts. 2012;:162-162.
https://hdl.handle.net/21.15107/rcub_vinar_12823 .

Vukanac, Ivana, Kandić, Aleksandar, Đurašević, Mirjana, Šešlak, Bojan, Čeliković, Igor, Milošević, Zoran, "Radionuclide content in laundry detergents available in Serbian market" in RAD 2012 : 1st International Conference on Radiation in Various Fields of Research : Book of abstracts (2012):162-162,
https://hdl.handle.net/21.15107/rcub_vinar_12823 .

TY  - CONF
AU  - Đurašević, Mirjana
AU  - Kandić, Aleksandar
AU  - Stefanović, Predrag
AU  - Vukanac, Ivana
AU  - Šešlak, Bojan
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12824
AB  - Coal as the most widely used fossil fuel contains traces of naturally occurring radioactivity from uranium and thorium series and 40K. The United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) estimated that average concentrations in coal worldwide are 50 Bq/kg for 40K and 20 Bq/kg for both 238U and 232Th (range 5 Bq/kg – 300 Bq/kg). [1] Activity concentrations of naturally occurring radionuclide 40K, 238U and 232Th for tree groups of samples of coal and mineral matter mixed with coal (I (2008 year – 30 samples), II (2009 year – 26 samples) and III (2010 year – 26 samples)) are presented in this paper. Representative samples of different coal quality were especially collected at different locations at open pit mines in RB “Kolubara” which has annual production of 29 millions tones of lignite for the power generation at TPP “Nicola Tesla”, Obrenovac. The samples were pulverized, dried and sealed in Marinelli plastic boxes 0.5 l, and stored for forty days until radioactive equilibrium between 226Ra and its decay products were achieved. All samples were measured by means of coaxial germanium HPGe detector (ORTEC GEM-30, 30 % relative efficiency and 1.8 keV resolution for 60Co at 1332 keV line). The detector was calibrated using standard solutions with radionuclide activities certified by CMI [2]. The experimentally obtained spectra were processed using Canberra’s Genie2000 software. The activity concentrations of 238U and 232Th were determined indirectly from the gamma-rays emitted by their progenies while 40K was determined directly by its gamma-line of 1460.8 keV. It can be seen from this table that the measured coal samples have low activity concentrations and the artificial radionuclides were not detected. The obtained activity concentrations of naturally occurring radionuclides in analyzed coal samples are comparable with those in coals from other countries [3, 4]
PB  - University of Niš : Faculty of Electronic Engineering
C3  - RAD 2012 : 1st International Conference on Radiation in Various Fields of Research : Book of abstracts
T1  - The content of natural radionuclides in lignite samples from open pit mines “Kolubara”, Serbia
SP  - 135
EP  - 135
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12824
ER  - 

@conference{
author = "Đurašević, Mirjana and Kandić, Aleksandar and Stefanović, Predrag and Vukanac, Ivana and Šešlak, Bojan",
year = "2012",
abstract = "Coal as the most widely used fossil fuel contains traces of naturally occurring radioactivity from uranium and thorium series and 40K. The United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) estimated that average concentrations in coal worldwide are 50 Bq/kg for 40K and 20 Bq/kg for both 238U and 232Th (range 5 Bq/kg – 300 Bq/kg). [1] Activity concentrations of naturally occurring radionuclide 40K, 238U and 232Th for tree groups of samples of coal and mineral matter mixed with coal (I (2008 year – 30 samples), II (2009 year – 26 samples) and III (2010 year – 26 samples)) are presented in this paper. Representative samples of different coal quality were especially collected at different locations at open pit mines in RB “Kolubara” which has annual production of 29 millions tones of lignite for the power generation at TPP “Nicola Tesla”, Obrenovac. The samples were pulverized, dried and sealed in Marinelli plastic boxes 0.5 l, and stored for forty days until radioactive equilibrium between 226Ra and its decay products were achieved. All samples were measured by means of coaxial germanium HPGe detector (ORTEC GEM-30, 30 % relative efficiency and 1.8 keV resolution for 60Co at 1332 keV line). The detector was calibrated using standard solutions with radionuclide activities certified by CMI [2]. The experimentally obtained spectra were processed using Canberra’s Genie2000 software. The activity concentrations of 238U and 232Th were determined indirectly from the gamma-rays emitted by their progenies while 40K was determined directly by its gamma-line of 1460.8 keV. It can be seen from this table that the measured coal samples have low activity concentrations and the artificial radionuclides were not detected. The obtained activity concentrations of naturally occurring radionuclides in analyzed coal samples are comparable with those in coals from other countries [3, 4]",
publisher = "University of Niš : Faculty of Electronic Engineering",
journal = "RAD 2012 : 1st International Conference on Radiation in Various Fields of Research : Book of abstracts",
title = "The content of natural radionuclides in lignite samples from open pit mines “Kolubara”, Serbia",
pages = "135-135",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12824"
}

Đurašević, M., Kandić, A., Stefanović, P., Vukanac, I.,& Šešlak, B.. (2012). The content of natural radionuclides in lignite samples from open pit mines “Kolubara”, Serbia. in RAD 2012 : 1st International Conference on Radiation in Various Fields of Research : Book of abstracts
University of Niš : Faculty of Electronic Engineering., 135-135.
https://hdl.handle.net/21.15107/rcub_vinar_12824

Đurašević M, Kandić A, Stefanović P, Vukanac I, Šešlak B. The content of natural radionuclides in lignite samples from open pit mines “Kolubara”, Serbia. in RAD 2012 : 1st International Conference on Radiation in Various Fields of Research : Book of abstracts. 2012;:135-135.
https://hdl.handle.net/21.15107/rcub_vinar_12824 .

Đurašević, Mirjana, Kandić, Aleksandar, Stefanović, Predrag, Vukanac, Ivana, Šešlak, Bojan, "The content of natural radionuclides in lignite samples from open pit mines “Kolubara”, Serbia" in RAD 2012 : 1st International Conference on Radiation in Various Fields of Research : Book of abstracts (2012):135-135,
https://hdl.handle.net/21.15107/rcub_vinar_12824 .

TY  - CONF
AU  - Đurašević, Mirjana
AU  - Vukanac, Ivana
AU  - Kandić, Aleksandar
AU  - Šešlak, Bojan
AU  - Milošević, Zoran
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12844
AB  - Učešće u interkomparativnim merenjima, za laboratorije akreditovane po standardu SRPS ISO/IEC 17025:2006 predstavlja vid eksterne kontrole kvaliteta. Na taj način akreditovana laboratorija potvrĎuje tačnost, pouzdanost i reproducibilnost akreditovane metode. Evropski centri kao što su IAEA, JRC, i IRMM u okviru svojih redovnih aktivnosti imaju obavezu organizacije i realizacije programa interkomparativnih merenja. Jedan deo tih programa odnosi se na merenje sadrţaja prirodnih i veštačkih radionuklida u uzorcima iz okoline. Laboratorija za nuklearnu i plazma fiziku, Instituta "Vinča", redovno učestvuje na nekom od takvih programa u cilju obezbedjenja kvaliteta rezultata ispitivanja. U toku 2008. i 2009. godine učestvovali smo na dve interkomparativne kampanje organizovane od strane Grupe za Referentne Materijale (Reference Materials Group) u sklopu IAEA (International Atomic Energy Agency):  The IAEA-CU-2008-03 Worldwide open proficiency test: OdreĎivanje prirodnih radionuklida u fosfogipsu i vodi.  The IAEA-CU-2009-03 Worldwide open proficiency test: OdreĎivanje prirodnih i veštačkih radionuklida u zemljištu sa mahovinom i spajkovanoj vodi.
AB  - Laboratories accredited in accordance with ISO / IEC 17025:2006 have an obligation to participate periodicaly in intercomparison campaigns organised by international centres of excellence in the field of interest. These external quality control exercises confirm the accuracy, reliability and reproducibility of accredited methods. European centers (IAEA, JRC, IRMM) have an obligation, as one of their regular activities, to organize and implement programs of intercomparison measurements. Manny of these programs relate to measurement of natural and artificial radionuclides in environmental samples. Laboratory for Nuclear and Plasma Physics, Institute "Vinča", participated in two worldwide open proficiency tests organised in 2008 and 2009 by the Group for Reference Materials under the IAEA:  The IAEA-CU-2008-03: Determination of naturally occurring radionuclides in phosphogypsum and water.  The IAEA-CU-2009-03: Determination of natural and artificial radionuclides in moss-soil and spiked water. The results of measurements of phosphogypsum, moss soil and water samples are presented in this paper. The specific activities of naturally occurring gamma emitters originated from uranium and thorium series were determined in the phosphogypsum and moss soil samples. Besides them, the content of: 57Co, 60Co, 65Zn, 134Cs, 137Cs, 54Mn, 133Ba and 152Eu were determined in water samples.  The obtained results showed generally a very good agreement with referent values of specific activities given by IAEA. The accuracy and precision of the reported results were acceptable. The comprehensive analysis of obtained results enabled the elimination of the observed oversights and the improvement and validation of method for gamma spectrometric analysis of environmental samples
PB  - Zagreb : Croatian Radiation Protection Association
C3  - 8th Symposium of the Croatian Radiation Protection Association : Proceedings
T1  - Određivanje sadržaja radionuklida u okviru međunarodnih interkomparativnih merenja – IAEA-CU-2008-03 i IAEA-CU-2009-03
T1  - Radionuclide content determination within the international intercomparison campaigns – IAEA-CU-2008-03 and IAEA-CU-2009-03
SP  - 474
EP  - 479
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12844
ER  - 

@conference{
author = "Đurašević, Mirjana and Vukanac, Ivana and Kandić, Aleksandar and Šešlak, Bojan and Milošević, Zoran",
year = "2011",
abstract = "Učešće u interkomparativnim merenjima, za laboratorije akreditovane po standardu SRPS ISO/IEC 17025:2006 predstavlja vid eksterne kontrole kvaliteta. Na taj način akreditovana laboratorija potvrĎuje tačnost, pouzdanost i reproducibilnost akreditovane metode. Evropski centri kao što su IAEA, JRC, i IRMM u okviru svojih redovnih aktivnosti imaju obavezu organizacije i realizacije programa interkomparativnih merenja. Jedan deo tih programa odnosi se na merenje sadrţaja prirodnih i veštačkih radionuklida u uzorcima iz okoline. Laboratorija za nuklearnu i plazma fiziku, Instituta "Vinča", redovno učestvuje na nekom od takvih programa u cilju obezbedjenja kvaliteta rezultata ispitivanja. U toku 2008. i 2009. godine učestvovali smo na dve interkomparativne kampanje organizovane od strane Grupe za Referentne Materijale (Reference Materials Group) u sklopu IAEA (International Atomic Energy Agency):  The IAEA-CU-2008-03 Worldwide open proficiency test: OdreĎivanje prirodnih radionuklida u fosfogipsu i vodi.  The IAEA-CU-2009-03 Worldwide open proficiency test: OdreĎivanje prirodnih i veštačkih radionuklida u zemljištu sa mahovinom i spajkovanoj vodi., Laboratories accredited in accordance with ISO / IEC 17025:2006 have an obligation to participate periodicaly in intercomparison campaigns organised by international centres of excellence in the field of interest. These external quality control exercises confirm the accuracy, reliability and reproducibility of accredited methods. European centers (IAEA, JRC, IRMM) have an obligation, as one of their regular activities, to organize and implement programs of intercomparison measurements. Manny of these programs relate to measurement of natural and artificial radionuclides in environmental samples. Laboratory for Nuclear and Plasma Physics, Institute "Vinča", participated in two worldwide open proficiency tests organised in 2008 and 2009 by the Group for Reference Materials under the IAEA:  The IAEA-CU-2008-03: Determination of naturally occurring radionuclides in phosphogypsum and water.  The IAEA-CU-2009-03: Determination of natural and artificial radionuclides in moss-soil and spiked water. The results of measurements of phosphogypsum, moss soil and water samples are presented in this paper. The specific activities of naturally occurring gamma emitters originated from uranium and thorium series were determined in the phosphogypsum and moss soil samples. Besides them, the content of: 57Co, 60Co, 65Zn, 134Cs, 137Cs, 54Mn, 133Ba and 152Eu were determined in water samples.  The obtained results showed generally a very good agreement with referent values of specific activities given by IAEA. The accuracy and precision of the reported results were acceptable. The comprehensive analysis of obtained results enabled the elimination of the observed oversights and the improvement and validation of method for gamma spectrometric analysis of environmental samples",
publisher = "Zagreb : Croatian Radiation Protection Association",
journal = "8th Symposium of the Croatian Radiation Protection Association : Proceedings",
title = "Određivanje sadržaja radionuklida u okviru međunarodnih interkomparativnih merenja – IAEA-CU-2008-03 i IAEA-CU-2009-03, Radionuclide content determination within the international intercomparison campaigns – IAEA-CU-2008-03 and IAEA-CU-2009-03",
pages = "474-479",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12844"
}

Đurašević, M., Vukanac, I., Kandić, A., Šešlak, B.,& Milošević, Z.. (2011). Određivanje sadržaja radionuklida u okviru međunarodnih interkomparativnih merenja – IAEA-CU-2008-03 i IAEA-CU-2009-03. in 8th Symposium of the Croatian Radiation Protection Association : Proceedings
Zagreb : Croatian Radiation Protection Association., 474-479.
https://hdl.handle.net/21.15107/rcub_vinar_12844

Đurašević M, Vukanac I, Kandić A, Šešlak B, Milošević Z. Određivanje sadržaja radionuklida u okviru međunarodnih interkomparativnih merenja – IAEA-CU-2008-03 i IAEA-CU-2009-03. in 8th Symposium of the Croatian Radiation Protection Association : Proceedings. 2011;:474-479.
https://hdl.handle.net/21.15107/rcub_vinar_12844 .

Đurašević, Mirjana, Vukanac, Ivana, Kandić, Aleksandar, Šešlak, Bojan, Milošević, Zoran, "Određivanje sadržaja radionuklida u okviru međunarodnih interkomparativnih merenja – IAEA-CU-2008-03 i IAEA-CU-2009-03" in 8th Symposium of the Croatian Radiation Protection Association : Proceedings (2011):474-479,
https://hdl.handle.net/21.15107/rcub_vinar_12844 .

TY  - CONF
AU  - Šešlak, Bojan
AU  - Vukanac, Ivana
AU  - Kandić, Aleksandar
AU  - Đurašević, Mirjana M.
AU  - Čeliković, Igor
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12829
AB  - The determination of low activity concentration of uranium and radium isotopes in environmental samples could be performed by using alpha spectrometry in combination with radiochemical separation. This procedure usually requires demanding radio-chemical procedures before qualitative and quantitative analysis. Each step in the chemical separation process can involve losses of the analyte. The chemical recovery could be determined by using appropriate yield tracers such as 232U and 133Ba. For the preparation of the thin sources for high resolution ospectrometry electrodeposition and/or microcoprecipitation are the most often used methods. Several analytical techniques can be applied for determination of uranium and radium isotopes in waters and soils. The two largest categories of methods are radiometric and non-radiometric methods. Radiometric methods are used as routine procedures combined with selective solvent extraction. They give rapid information on total uranium and radium activity concentration, and their isotopic composition. Radiometric techniques need longer sample preparation than non-radiometric, but they give more reliable information about isotopic ratios of interest. Samples of water after filtering and spiking with a known amount ol 232U or 1338a tracer (depending on radionuclides to be analyzed) should be chemically treated. On the prepared samples mikrocoprecipitation could be applied (determination of uranium isotopes needs previous separating using UTEVA resin). Samples of soil should be ashed to exclude any organic matter, and after spiking with a known amount of already mentioned tracers, the adequate chemical procedure should be applied. The final phase of the procedure is almost identical as for water samples. Source prepared after the radiochemical treatment by electrodeposition and/or microcoprecipitation should be measured by means of semiconductor Si detector with surface barrier (or PIPS detector), for several days due to low specific activity of the initial sample. After complex spectral analysis the unknown activity could be obtained.
C3  - 16th European Conference on Analytical Chemistry "Challenges in modern Analytical Chemistry" : Book of abstracts
T1  - Radioanalytical methods for uranium and 226Ra determination in water and soil samples
SP  - RC01
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12829
ER  - 

@conference{
author = "Šešlak, Bojan and Vukanac, Ivana and Kandić, Aleksandar and Đurašević, Mirjana M. and Čeliković, Igor",
year = "2011",
abstract = "The determination of low activity concentration of uranium and radium isotopes in environmental samples could be performed by using alpha spectrometry in combination with radiochemical separation. This procedure usually requires demanding radio-chemical procedures before qualitative and quantitative analysis. Each step in the chemical separation process can involve losses of the analyte. The chemical recovery could be determined by using appropriate yield tracers such as 232U and 133Ba. For the preparation of the thin sources for high resolution ospectrometry electrodeposition and/or microcoprecipitation are the most often used methods. Several analytical techniques can be applied for determination of uranium and radium isotopes in waters and soils. The two largest categories of methods are radiometric and non-radiometric methods. Radiometric methods are used as routine procedures combined with selective solvent extraction. They give rapid information on total uranium and radium activity concentration, and their isotopic composition. Radiometric techniques need longer sample preparation than non-radiometric, but they give more reliable information about isotopic ratios of interest. Samples of water after filtering and spiking with a known amount ol 232U or 1338a tracer (depending on radionuclides to be analyzed) should be chemically treated. On the prepared samples mikrocoprecipitation could be applied (determination of uranium isotopes needs previous separating using UTEVA resin). Samples of soil should be ashed to exclude any organic matter, and after spiking with a known amount of already mentioned tracers, the adequate chemical procedure should be applied. The final phase of the procedure is almost identical as for water samples. Source prepared after the radiochemical treatment by electrodeposition and/or microcoprecipitation should be measured by means of semiconductor Si detector with surface barrier (or PIPS detector), for several days due to low specific activity of the initial sample. After complex spectral analysis the unknown activity could be obtained.",
journal = "16th European Conference on Analytical Chemistry "Challenges in modern Analytical Chemistry" : Book of abstracts",
title = "Radioanalytical methods for uranium and 226Ra determination in water and soil samples",
pages = "RC01",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12829"
}

Šešlak, B., Vukanac, I., Kandić, A., Đurašević, M. M.,& Čeliković, I.. (2011). Radioanalytical methods for uranium and 226Ra determination in water and soil samples. in 16th European Conference on Analytical Chemistry "Challenges in modern Analytical Chemistry" : Book of abstracts, RC01.
https://hdl.handle.net/21.15107/rcub_vinar_12829

Šešlak B, Vukanac I, Kandić A, Đurašević MM, Čeliković I. Radioanalytical methods for uranium and 226Ra determination in water and soil samples. in 16th European Conference on Analytical Chemistry "Challenges in modern Analytical Chemistry" : Book of abstracts. 2011;:RC01.
https://hdl.handle.net/21.15107/rcub_vinar_12829 .

Šešlak, Bojan, Vukanac, Ivana, Kandić, Aleksandar, Đurašević, Mirjana M., Čeliković, Igor, "Radioanalytical methods for uranium and 226Ra determination in water and soil samples" in 16th European Conference on Analytical Chemistry "Challenges in modern Analytical Chemistry" : Book of abstracts (2011):RC01,
https://hdl.handle.net/21.15107/rcub_vinar_12829 .