Analyses of 210Pb concentrations in surface air and in rain water at the central Guizhou, China
Analyses of 210Pb concentrations in surface air and in rain water at the central Guizhou, China
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中国贵州中部地表空气和雨水中 210Pb 浓度分析
DOI：
10.1111/j.1600-0889.2007.00316.x
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发表时间：
2008-01
期刊：
影响因子：
--
通讯作者：
F.C.Wu
中科院分区：
文献类型：
--
作者：
J.A.Chen;S.L.Wang;W.Yang;E.Y.Wan;H.N. Lee;C.S.Wang;G.J. Wan;F.C.Wu
地表空气和雨水样本是在中国贵阳的冠峰山遗址采集的。地表空气中210Pb月均浓度呈U型分布，冬季高值出现，夏季和初秋低值出现。地表空气中 210Pb 浓度的年平均值估计为 2.7 ± 0.6 mBq m-3，这至少比世界各地大量监测站报告的年平均值高出四倍。该地区土壤中的浓缩铀含量可能会导致大量 222Rn 的释放，这些 222Rn 会衰变成 210Pb，并附着在大气气溶胶上。该地点受到季风气候的影响。地表空气中 210Pb 浓度的月平均值分布与观测到的气温和降雨量的月平均值的倒数有很好的相关性。冬、春季雨水与地表空气中210Pb的分配系数大于夏、秋季。尽管降雨量很重要，但随季节变化的降雨类型和持续时间对分配系数的变化起着关键作用。
Samples of surface air and rain water were collected at the Mt. Guanfeng site located at Guiyang, China. The monthly mean 210Pb concentrations in surface air exhibited a U-pattern with high values appearing in winter and low values in summer and early autumn. The annual mean of 210Pb concentrations in surface air was estimated to be 2.7 ± 0.6 mBq m-3, which was at least four times higher than the annual mean reported from a large number of monitoring stations located throughout the world. The amounts of enriched Uranium in soil at the region could significantly contribute a great deal of release of 222Rn that decay to 210Pb which gets attached to the atmospheric aerosols. The site was under the influence of a monsoon climate. The distribution of monthly mean of 210Pb concentrations in surface air correlates well with the reciprocal of monthly average of observed air temperature and rainfall. The partition coefficients of 210Pb between rain water-surface air in the winter and spring were larger than those in the summer and autumn. The type and duration of rain depending on season played key roles for the changes of partition coefficients, although the rain amount is important.
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DOI：
--
发表时间：
2000
期刊：
Uranium Mining and Metallurgy
影响因子：
--
作者：
L. Ren
通讯作者：
L. Ren
影响因子：
--
作者：
K. Turekian;L. Benninger;E. Dion
通讯作者：
K. Turekian;L. Benninger;E. Dion
影响因子：
--
作者：
M. Baskaran
通讯作者：
M. Baskaran
影响因子：
3.9
作者：
G. Wan;P. Santschi;M. Sturm;Klaus. Farrenkothen;Alfred. Lueck;E. Werth;C. Schuler
通讯作者：
G. Wan;P. Santschi;M. Sturm;Klaus. Farrenkothen;Alfred. Lueck;E. Werth;C. Schuler
DOI：
10.1007/978-94-011-5552-6_58
发表时间：
1997-10
期刊：
Water, Air, and Soil Pollution
影响因子：
--
作者：
P. Appleby
通讯作者：
P. Appleby