Pinder J E, Hinton T G, Whicker F W
Savannah River Ecology Laboratory, Drawer E, Aiken, SC 29801, USA.
J Environ Radioact. 2005;80(2):225-43. doi: 10.1016/j.jenvrad.2004.09.003.
To document the short-term dynamics of Cs, 4 kg of (133)Cs were introduced into an 11.4-ha, 157 000 m(3) reservoir previously contaminated with (137)Cs from past reactor operations at the US Department of Energy's Savannah River Site near Aiken, South Carolina, USA. The (133)Cs addition resulted in an increase of 6.1 MBq of (137)Cs (1.9 mug (137)Cs) in the water column over the following 260 days. Possible sources for the increased (137)Cs included (1) release from the sediments, (2) release from the approximately 26 000 kg of aquatic macrophytes that occupied 80% of the reservoir, and (3) wash-in from the pond's watershed. Data are presented to indicate that release from the sediments was the principal source of the (137)Cs increase. The fraction of (137)Cs released from the sediments (0.7%) is consistent with laboratory measurements of (137)Cs desorption from neighboring ponds on the Savannah River Site.
为记录铯的短期动态变化，将4千克的（133）铯引入到一个面积为11.4公顷、容积为157000立方米的水库中，该水库先前受到来自美国南卡罗来纳州艾肯附近美国能源部萨凡纳河工厂过去反应堆运行产生的（137）铯的污染。在接下来的260天里，添加（133）铯导致水柱中（137）铯增加了6.1兆贝克勒尔（1.9微克（137）铯）。（137）铯增加的可能来源包括：（1）沉积物释放；（2）占据水库80%面积的约26000千克水生大型植物的释放；（3）来自池塘流域的冲刷带入。所呈现的数据表明，沉积物释放是（137）铯增加的主要来源。从沉积物中释放的（137）铯的比例（0.7%）与萨凡纳河工厂附近池塘中（137）铯解吸的实验室测量结果一致。
