Isotopic Pu, U, and Np signatures in soils from Semipalatinsk-21, Kazakh Republic and the Southern Urals, Russia
Isotopic Pu, U, and Np signatures in soils from Semipalatinsk-21, Kazakh Republic and the Southern Urals, Russia
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DOI：
10.1016/s0265-931x(97)00050-7
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发表时间：
1998-01-01
影响因子：
2.3
通讯作者：
Pozolotina, VN
中科院分区：
文献类型：
--
作者：
Beasley, TM;Kelley, JM;Pozolotina, VN
本文报道了从1957年南乌拉尔山Mayak核电站事故（“Kyshtym事故”）污染的土壤中以及从前苏联塞米巴拉金斯克-21试验场及其附近收集的土壤中分离出的钚、铀和钕的质谱测量结果。这些结果提供了一套连贯的同位素数据，表明：（1）从Mayak加工的辐照铀燃料中回收的钚构成了塞米巴拉金斯克-21试验的钚装置的源材料;（2）破裂的Mayak储罐中的（237）Np主要导致，在处理低燃耗铀燃料以回收钚和铀的过程中，这种放射性核素在废物流中的浓缩;（3）（236）这两个地点的铀可能有助于追踪流入北冰洋的附近河流系统的铀和其他超铀放射性核素的输入。出版社：Elsevier Science Ltd
Mass spectrometry measurements of Pu, U and Np isolated fr om soils contaminated by the 1957 accident at the Mayak nuclear complex in the Southern Ural mountains ('Kyshtym accident') and from soils collected at and near the Former Soviet Union (FSU) test site at Semipalatinsk-21 are reported. The results provide a coherent isotopic data set suggesting (I) that Pu recovered from irradiated uranium fuels processed at Mayak formed the source material for Pu devices tested at Semipalatinsk-21; (2) that (237)Np in the breached Mayak storage tank resulted, principally, from enrichment of this radionuclide in waste streams during the processing of low burn-up uranium fuels to recover both Pu and U and (3) the presence of (236)U at both sites may be useful in tracing inputs of this, and other transuranic radionuclides, to nearby river systems that flow to the Arctic Ocean. Published by Elsevier Science Ltd.