TY  - JOUR
AU  - Ajtić, Jelena
AU  - Zorko, B.
AU  - Nečemer, M.
AU  - Sarvan, Darko
AU  - Rajačić, M.
AU  - Krneta Nikolić, J.
AU  - Todorović, D.
AU  - Djurdjevic, V.
AU  - Vodenik, B.
AU  - Glavič Cindro, D.
AU  - Kožar Logar, J.
PY  - 2021
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2364
AB  - This study investigates the beryllium-7, lead-210 and caesium-137 activity concentrations in aerosol filter samples collected monthly along the 45°N zonal belt over 1991–2019. Sampling was performed in three locations, one in Serbia and two in Slovenia, and the Slovenian data records are published here for the first time. The activity concentrations were determined by standard gamma spectrometry. The obtained results are in general agreement with the literature data for Europe. The data sets at different sites display similarities in measurement ranges, overall means and seasonal cycles. Still, statistical tests show significant differences among the radionuclides’ concentrations across the locations. To investigate underlying processes that affect radioactivity in the surface air in this region, multivariate statistical concepts are applied to the radionuclides’ concentrations and local meteorological parameters. Discriminant analysis shows that all three sites are well separated from each other. Principal component analysis gives common pattern of interconnection between the observables: temperature has a stronger influence on the behaviour of beryllium-7 and lead-210 than that of caesium-137, but a negative correlation of the radionuclides’ concentrations with precipitation seems the strongest for caesium-137. Principal component analysis also shows local differences in the degree of relationship between the meteorological parameters and activity concentrations of the investigated radionuclides. This is an important finding for future atmospheric transport studies.
PB  - Springer
T2  - International Journal of Environmental Science and Technology
T1  - Characteristics of radioactivity in the surface air along the 45°N zonal belt in South-Eastern Europe
DO  - 10.1007/s13762-021-03814-0
ER  - 

@article{
author = "Ajtić, Jelena and Zorko, B. and Nečemer, M. and Sarvan, Darko and Rajačić, M. and Krneta Nikolić, J. and Todorović, D. and Djurdjevic, V. and Vodenik, B. and Glavič Cindro, D. and Kožar Logar, J.",
year = "2021",
abstract = "This study investigates the beryllium-7, lead-210 and caesium-137 activity concentrations in aerosol filter samples collected monthly along the 45°N zonal belt over 1991–2019. Sampling was performed in three locations, one in Serbia and two in Slovenia, and the Slovenian data records are published here for the first time. The activity concentrations were determined by standard gamma spectrometry. The obtained results are in general agreement with the literature data for Europe. The data sets at different sites display similarities in measurement ranges, overall means and seasonal cycles. Still, statistical tests show significant differences among the radionuclides’ concentrations across the locations. To investigate underlying processes that affect radioactivity in the surface air in this region, multivariate statistical concepts are applied to the radionuclides’ concentrations and local meteorological parameters. Discriminant analysis shows that all three sites are well separated from each other. Principal component analysis gives common pattern of interconnection between the observables: temperature has a stronger influence on the behaviour of beryllium-7 and lead-210 than that of caesium-137, but a negative correlation of the radionuclides’ concentrations with precipitation seems the strongest for caesium-137. Principal component analysis also shows local differences in the degree of relationship between the meteorological parameters and activity concentrations of the investigated radionuclides. This is an important finding for future atmospheric transport studies.",
publisher = "Springer",
journal = "International Journal of Environmental Science and Technology",
title = "Characteristics of radioactivity in the surface air along the 45°N zonal belt in South-Eastern Europe",
doi = "10.1007/s13762-021-03814-0"
}

Ajtić, J., Zorko, B., Nečemer, M., Sarvan, D., Rajačić, M., Krneta Nikolić, J., Todorović, D., Djurdjevic, V., Vodenik, B., Glavič Cindro, D.,& Kožar Logar, J.. (2021). Characteristics of radioactivity in the surface air along the 45°N zonal belt in South-Eastern Europe. in International Journal of Environmental Science and Technology
Springer..
https://doi.org/10.1007/s13762-021-03814-0

Ajtić J, Zorko B, Nečemer M, Sarvan D, Rajačić M, Krneta Nikolić J, Todorović D, Djurdjevic V, Vodenik B, Glavič Cindro D, Kožar Logar J. Characteristics of radioactivity in the surface air along the 45°N zonal belt in South-Eastern Europe. in International Journal of Environmental Science and Technology. 2021;.
doi:10.1007/s13762-021-03814-0 .

Ajtić, Jelena, Zorko, B., Nečemer, M., Sarvan, Darko, Rajačić, M., Krneta Nikolić, J., Todorović, D., Djurdjevic, V., Vodenik, B., Glavič Cindro, D., Kožar Logar, J., "Characteristics of radioactivity in the surface air along the 45°N zonal belt in South-Eastern Europe" in International Journal of Environmental Science and Technology (2021),
https://doi.org/10.1007/s13762-021-03814-0 . .

TY  - CONF
AU  - Rajačić, M.
AU  - Sarvan, Darko
AU  - Todorović, D.
AU  - Ajtić, Jelena
AU  - Krneta Nikolić, Jelena
AU  - Zorko, B.
AU  - Vodenik, B.
AU  - Glavič Cindro, Denis
AU  - Kožar Logar, Jasmina
PY  - 2017
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2352
AB  - Beryllium-7 is a natural radionuclide whose specific activity at the surface strongly depends on transport history from the upper atmosphere where this isotope is produced. Since the major removal mechanism of beryllium-7 from the atmosphere is wet deposition, local meteorological factors also play an important role in its abundance at the surface. In this analysis we present the beryllium-7 correlations in total deposition (dry and wet) measured in three locations: Belgrade, the capital of Serbia; Ljubljana, the capital of Slovenia; and Krško, a town in eastern Slovenia where a nuclear power plants located. Air distance between Belgrade and Ljubljana is about 490 km, while Krško lies roughly between them, and is less than 80 km away from Ljubljana. The data in our analysis cover the 1995- 2015 period. The beryllium-7 specific activities were measured by standard gamma spectrometry at the Vinča Institute and Jožef Stefan Institute. A comparison of the three beryllium-7 records in total deposition shows some differences between the measurement sites. For example, the maximum beryllium-7 concentrations in Belgrade are noted in June, while in Ljubljana and Krško, the maximum is observed in August. However, in both cases, the minimum beryllium-7 concentrations occur five months after the maximum, i.e. in November in Vinča, and in February in Ljubljana and Krško. Further, the highest Pearson's linear correlation coefficient (r) is obtained for the LjubljanaKrško records (r=0.68). This strong linear correlation decreases down to a weak correlation of r=0.35 and r=0.30for the Belgrade-Ljubljana and Belgrade-Krško records, respectively.
C3  - Book of Abstracts of the Fourth International Conference on Environmental Radioactivity: Radionuclides as Tracers of Environmental Processes (ENVIRA2017), 29 May – 2 June, 2017, Vilnius, Lithuania
T1  - Beryllium-7 correlations in total deposition (dry and wet) measured in Serbia and Slovenia
SP  - 158
EP  - 158
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_2352
ER  - 

@conference{
author = "Rajačić, M. and Sarvan, Darko and Todorović, D. and Ajtić, Jelena and Krneta Nikolić, Jelena and Zorko, B. and Vodenik, B. and Glavič Cindro, Denis and Kožar Logar, Jasmina",
year = "2017",
abstract = "Beryllium-7 is a natural radionuclide whose specific activity at the surface strongly depends on transport history from the upper atmosphere where this isotope is produced. Since the major removal mechanism of beryllium-7 from the atmosphere is wet deposition, local meteorological factors also play an important role in its abundance at the surface. In this analysis we present the beryllium-7 correlations in total deposition (dry and wet) measured in three locations: Belgrade, the capital of Serbia; Ljubljana, the capital of Slovenia; and Krško, a town in eastern Slovenia where a nuclear power plants located. Air distance between Belgrade and Ljubljana is about 490 km, while Krško lies roughly between them, and is less than 80 km away from Ljubljana. The data in our analysis cover the 1995- 2015 period. The beryllium-7 specific activities were measured by standard gamma spectrometry at the Vinča Institute and Jožef Stefan Institute. A comparison of the three beryllium-7 records in total deposition shows some differences between the measurement sites. For example, the maximum beryllium-7 concentrations in Belgrade are noted in June, while in Ljubljana and Krško, the maximum is observed in August. However, in both cases, the minimum beryllium-7 concentrations occur five months after the maximum, i.e. in November in Vinča, and in February in Ljubljana and Krško. Further, the highest Pearson's linear correlation coefficient (r) is obtained for the LjubljanaKrško records (r=0.68). This strong linear correlation decreases down to a weak correlation of r=0.35 and r=0.30for the Belgrade-Ljubljana and Belgrade-Krško records, respectively.",
journal = "Book of Abstracts of the Fourth International Conference on Environmental Radioactivity: Radionuclides as Tracers of Environmental Processes (ENVIRA2017), 29 May – 2 June, 2017, Vilnius, Lithuania",
title = "Beryllium-7 correlations in total deposition (dry and wet) measured in Serbia and Slovenia",
pages = "158-158",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_2352"
}

Rajačić, M., Sarvan, D., Todorović, D., Ajtić, J., Krneta Nikolić, J., Zorko, B., Vodenik, B., Glavič Cindro, D.,& Kožar Logar, J.. (2017). Beryllium-7 correlations in total deposition (dry and wet) measured in Serbia and Slovenia. in Book of Abstracts of the Fourth International Conference on Environmental Radioactivity: Radionuclides as Tracers of Environmental Processes (ENVIRA2017), 29 May – 2 June, 2017, Vilnius, Lithuania, 158-158.
https://hdl.handle.net/21.15107/rcub_veterinar_2352

Rajačić M, Sarvan D, Todorović D, Ajtić J, Krneta Nikolić J, Zorko B, Vodenik B, Glavič Cindro D, Kožar Logar J. Beryllium-7 correlations in total deposition (dry and wet) measured in Serbia and Slovenia. in Book of Abstracts of the Fourth International Conference on Environmental Radioactivity: Radionuclides as Tracers of Environmental Processes (ENVIRA2017), 29 May – 2 June, 2017, Vilnius, Lithuania. 2017;:158-158.
https://hdl.handle.net/21.15107/rcub_veterinar_2352 .

Rajačić, M., Sarvan, Darko, Todorović, D., Ajtić, Jelena, Krneta Nikolić, Jelena, Zorko, B., Vodenik, B., Glavič Cindro, Denis, Kožar Logar, Jasmina, "Beryllium-7 correlations in total deposition (dry and wet) measured in Serbia and Slovenia" in Book of Abstracts of the Fourth International Conference on Environmental Radioactivity: Radionuclides as Tracers of Environmental Processes (ENVIRA2017), 29 May – 2 June, 2017, Vilnius, Lithuania (2017):158-158,
https://hdl.handle.net/21.15107/rcub_veterinar_2352 .