在甲醇-硝酸介质中用阴离子交换法分离镅、锔
SEPARATION OF AMERICIUM FROM CURIUM BY ANION EXCHANGE METHOD IN CH_3OH-HNO_3 MEDIA
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摘要: <正> 与其它离子交换色层法相比,在硝酸-有机溶剂混合介质中用阴离子交换法分离超钚元素具有分离系数高,不引入盐类和没有腐蚀性等优点。各国已相继进行了详细研究。近年来这方法已发展应用于从辐照过的钚靶中回收Am和Cm,以及从大量冲积土中分析锕系元素和希土元素。Abstract: The behaviors of Am and Cm in CH 3OH-HNO 3-anion exchanger system are inve-sugated.in detail and the dependence of their distribution,coefficients on the concentration of CH3OH, HNO3 and loading of resin is determined. Besides, preliminary studies of the behaviors of actinides such as U, Np and Pu, fission products and non-radioactive impurities in the separation process are also carried out. Based on results of these studies, a procedure for the separation of Am from Cm is proposed.