Długosz-Lisiecka Magdalena, Bem Henryk
Institute of Applied Radiation Chemistry, Technical University of Lodz, Zeromskiego Street 116, 90-924 Lodz, Poland.
J Radioanal Nucl Chem. 2012;293(1):135-140. doi: 10.1007/s10967-012-1690-5. Epub 2012 Feb 29.
The significant differences in the activities of Pb, Bi, Po and cosmogenic Be and Na radionuclides in the urban aerosol samples collected in the summers 2010 and 2011 in the Lodz city of Poland were observed. Simultaneous measurement of these radionuclides, after a simple modification of the one compartment model, allows us to calculate both: the corrected aerosol residence times in the troposphere (1 ÷ 25 days) and in the lower stratosphere (103 ÷ 205 days). The relative input of the additional sources (beside of the Rn decay in the air) to the total activity concentrations of Pb, Bi and Po radionuclides in the urban air, plays a substantial role (up to 97% of the total activity) only in the case of Po.
在波兰罗兹市2010年和2011年夏季采集的城市气溶胶样本中，观察到铅、铋、钋以及宇宙成因铍和钠放射性核素的活度存在显著差异。在对单室模型进行简单修改后，同时测量这些放射性核素，使我们能够计算出：对流层中气溶胶的校正停留时间（1至25天）以及平流层下部的校正停留时间（103至205天）。除空气中氡衰变外，额外来源对城市空气中铅、铋和钋放射性核素总活度浓度的相对贡献，仅在钋的情况下起重要作用（高达总活度的97%）。
