TY  - JOUR
AU  - Todorović, Dragana
AU  - Popovic, Dragana
AU  - Krneta-Nikolić, Jelena D.
AU  - Ajtić, Jelena V.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4163
AB  - Concentrations of beryllium-7 (Be-7), lead-210 (Pb-210) and caesium-137 (Cs-137) were measured at two sites in the city of Belgrade (Serbia). One monitoring site was located in the central city area with heavy traffic and the other within the Institute of Nuclear Sciences Vinca, in the suburbs. Presented data cover the period 2004-9. Activity of the radionuclides was determined on an HPGe detector (Canberra, relative efficiency 23%) by standard gamma spectrometry. Activities of Be-7 and Pb-210 exhibit a similar seasonal pattern. The mean monthly concentrations of Be-7 did not exceed 7 mBq m(-3). The maxima are correlated with the seasonal increase in temperature, whereas the minima are linearly correlated with the amount of precipitation. The activity of Pb-210 was below 0.9 mBq m(-3). The activities of both radionuclides were very low in winters and were largely affected by precipitation and snow coverage. Concentrations of Cs-137 were mainly below the limit of detection.
T2  - Radiation Protection Dosimetry
T1  - Radioactivity Monitoring in Ground Level Air in Belgrade Urban Area
VL  - 142
IS  - 2-4
SP  - 308
EP  - 313
DO  - 10.1093/rpd/ncq211
ER  - 

@article{
author = "Todorović, Dragana and Popovic, Dragana and Krneta-Nikolić, Jelena D. and Ajtić, Jelena V.",
year = "2010",
abstract = "Concentrations of beryllium-7 (Be-7), lead-210 (Pb-210) and caesium-137 (Cs-137) were measured at two sites in the city of Belgrade (Serbia). One monitoring site was located in the central city area with heavy traffic and the other within the Institute of Nuclear Sciences Vinca, in the suburbs. Presented data cover the period 2004-9. Activity of the radionuclides was determined on an HPGe detector (Canberra, relative efficiency 23%) by standard gamma spectrometry. Activities of Be-7 and Pb-210 exhibit a similar seasonal pattern. The mean monthly concentrations of Be-7 did not exceed 7 mBq m(-3). The maxima are correlated with the seasonal increase in temperature, whereas the minima are linearly correlated with the amount of precipitation. The activity of Pb-210 was below 0.9 mBq m(-3). The activities of both radionuclides were very low in winters and were largely affected by precipitation and snow coverage. Concentrations of Cs-137 were mainly below the limit of detection.",
journal = "Radiation Protection Dosimetry",
title = "Radioactivity Monitoring in Ground Level Air in Belgrade Urban Area",
volume = "142",
number = "2-4",
pages = "308-313",
doi = "10.1093/rpd/ncq211"
}

Todorović, D., Popovic, D., Krneta-Nikolić, J. D.,& Ajtić, J. V.. (2010). Radioactivity Monitoring in Ground Level Air in Belgrade Urban Area. in Radiation Protection Dosimetry, 142(2-4), 308-313.
https://doi.org/10.1093/rpd/ncq211

Todorović D, Popovic D, Krneta-Nikolić JD, Ajtić JV. Radioactivity Monitoring in Ground Level Air in Belgrade Urban Area. in Radiation Protection Dosimetry. 2010;142(2-4):308-313.
doi:10.1093/rpd/ncq211 .

Todorović, Dragana, Popovic, Dragana, Krneta-Nikolić, Jelena D., Ajtić, Jelena V., "Radioactivity Monitoring in Ground Level Air in Belgrade Urban Area" in Radiation Protection Dosimetry, 142, no. 2-4 (2010):308-313,
https://doi.org/10.1093/rpd/ncq211 . .

TY  - JOUR
AU  - Ajtić, Jelena V.
AU  - Todorović, Dragana
AU  - Filipović, Anka
AU  - Krneta-Nikolić, Jelena D.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3245
AB  - Three sets of data covering the 2004-2007 period are examined: two beryllium-7 series and ozone measured in ground level air. The measuring sites are at three different locations in Belgrade, Serbia. The temporal evolution of beryllium-7 and ozone is presented, as well as their mutual correlations. Beryllium-7 data for Belgrade agree well with the results for other locations in the region. The correlation between two beryllium-7 data sets is 0.57. The results for ozone indicate that Belgrade is not a common continental site, as the maximum in ozone distribution is reached in springtime. The overall correlation between beryllium-7 and ozone is good, but varies over different seasons. A large correlation (0.67) is noted between beryllium-7 measured at the site in Vinca, Serbia, and the monthly maximum ozone in autumn. An analysis which assumes the transport of air masses from the stratosphere, along which the only process changing the air mass composition is radioactive decay of beryllium-7, does not conclusively confirm the high correlation between beryllium-7 and ozone in autumn.
T2  - Nuclear technology and radiation protection
T1  - Ground Level Air Beryllium-7 and Ozone in Belgrade
VL  - 23
IS  - 2
SP  - 65
EP  - 71
DO  - 10.2298/NTRP0802065A
ER  - 

@article{
author = "Ajtić, Jelena V. and Todorović, Dragana and Filipović, Anka and Krneta-Nikolić, Jelena D.",
year = "2008",
abstract = "Three sets of data covering the 2004-2007 period are examined: two beryllium-7 series and ozone measured in ground level air. The measuring sites are at three different locations in Belgrade, Serbia. The temporal evolution of beryllium-7 and ozone is presented, as well as their mutual correlations. Beryllium-7 data for Belgrade agree well with the results for other locations in the region. The correlation between two beryllium-7 data sets is 0.57. The results for ozone indicate that Belgrade is not a common continental site, as the maximum in ozone distribution is reached in springtime. The overall correlation between beryllium-7 and ozone is good, but varies over different seasons. A large correlation (0.67) is noted between beryllium-7 measured at the site in Vinca, Serbia, and the monthly maximum ozone in autumn. An analysis which assumes the transport of air masses from the stratosphere, along which the only process changing the air mass composition is radioactive decay of beryllium-7, does not conclusively confirm the high correlation between beryllium-7 and ozone in autumn.",
journal = "Nuclear technology and radiation protection",
title = "Ground Level Air Beryllium-7 and Ozone in Belgrade",
volume = "23",
number = "2",
pages = "65-71",
doi = "10.2298/NTRP0802065A"
}

Ajtić, J. V., Todorović, D., Filipović, A.,& Krneta-Nikolić, J. D.. (2008). Ground Level Air Beryllium-7 and Ozone in Belgrade. in Nuclear technology and radiation protection, 23(2), 65-71.
https://doi.org/10.2298/NTRP0802065A

Ajtić JV, Todorović D, Filipović A, Krneta-Nikolić JD. Ground Level Air Beryllium-7 and Ozone in Belgrade. in Nuclear technology and radiation protection. 2008;23(2):65-71.
doi:10.2298/NTRP0802065A .

Ajtić, Jelena V., Todorović, Dragana, Filipović, Anka, Krneta-Nikolić, Jelena D., "Ground Level Air Beryllium-7 and Ozone in Belgrade" in Nuclear technology and radiation protection, 23, no. 2 (2008):65-71,
https://doi.org/10.2298/NTRP0802065A . .