Vallés I, Camacho A, Ortega X, Serrano I, Blázquez S, Pérez S
Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya, Diagonal 647, 08028 Barcelona, Spain.
J Environ Radioact. 2009 Feb;100(2):102-7. doi: 10.1016/j.jenvrad.2008.10.009. Epub 2008 Nov 22.
Results for naturally occurring (7)Be, (210)Pb, (40)K, (214)Bi, (214)Pb, (212)Pb, (228)Ac and (208)Tl and anthropogenic (137)Cs in airborne particulate matter in the Barcelona area during the period from January 2001 to December 2005 are presented and discussed. The (212)Pb and (208)Tl, (214)Bi and (214)Pb, (7)Be and (210)Pb radionuclide levels showed a significant correlation with each other, with correlation coefficients of 0.99, 0.78 and 0.69, respectively, suggesting similar origin/behaviour of these radionuclides in the air. Caessium-137 and Potassium-40 were transported to the air as resuspended particle from the soil. The (7)Be and (210)Pb concentrations showed similar seasonal variations, with a tendency for maximum concentrations during the summer months. An inverse relationship was observed between the (7)Be, (210)Pb, (40)K and (137)Cs concentrations and weekly rainfall, indicating washout of atmospheric aerosols carrying these radionuclides.
给出并讨论了2001年1月至2005年12月期间巴塞罗那地区空气中颗粒物中天然存在的（7）铍、（210）铅、（40）钾、（214）铋、（214）铅、（212）铅、（228）锕和（208）铊以及人为源（137）铯的检测结果。（212）铅与（208）铊、（214）铋与（214）铅、（7）铍与（210）铅的放射性核素水平彼此之间呈现出显著相关性，相关系数分别为0.99、0.78和0.69，这表明这些放射性核素在空气中具有相似的来源/行为。铯 - 137和钾 - 40作为土壤中再悬浮颗粒物进入空气中。（7）铍和（210）铅的浓度呈现出相似的季节变化，在夏季月份有浓度达到最大值的趋势。观察到（7）铍、（210）铅、（40）钾和（137）铯的浓度与每周降雨量之间呈反比关系，这表明携带这些放射性核素的大气气溶胶被冲刷掉了。
