Todorovic Dragana, Popovic Dragana, Nikolic Jelena, Ajtic Jelena
Laboratory of Environmental and Radiation Protection, Institute of Nuclear Sciences Vinca, Belgrade, Serbia.
Radiat Prot Dosimetry. 2010 Dec;142(2-4):308-13. doi: 10.1093/rpd/ncq211. Epub 2010 Sep 10.
Concentrations of beryllium-7 ((7)Be), lead-210 ((210)Pb) and caesium-137 ((137)Cs) 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 (7)Be and (210)Pb exhibit a similar seasonal pattern. The mean monthly concentrations of (7)Be 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 (210)Pb 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 (137)Cs were mainly below the limit of detection.
在塞尔维亚贝尔格莱德市的两个地点测量了铍 - 7（(7)Be）、铅 - 210（(210)Pb）和铯 - 137（(137)Cs）的浓度。一个监测点位于市中心交通繁忙区域，另一个位于郊区的核科学研究所温察内。给出的数据涵盖2004年至2009年期间。通过标准伽马能谱法在一台HPGe探测器（堪培拉公司，相对效率23%）上测定放射性核素的活度。(7)Be和(210)Pb的活度呈现出相似的季节模式。(7)Be的月平均浓度未超过7 mBq m(-3)。其最大值与温度的季节性升高相关，而最小值与降水量呈线性相关。(210)Pb的活度低于0.9 mBq m(-3)。这两种放射性核素的活度在冬季都非常低，并且在很大程度上受降水量和积雪覆盖的影响。(137)Cs的浓度主要低于检测限。
