水醇混合介质中离子交换分离超钚元素——(Ⅱ)CH_3OH-LiNO_3-HNO_3-DTPA-阴离子交换树脂体系
SEPARATION OF TRANSPLUTONIUM ELEMENTS WITH ION EXCHANGER IN WATER-METHANOL MIXTURES.
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摘要: <正> 在超钚元素提取中,离子交换色层法是Am、Cm分离最有效的方法,我们曾详细地研究过CH_3OH-HNO_3-阴离子交换树脂体系分离Am、Cm(β=2.3),在这基础上加入氨羧络合剂DTPA,利用DTPA与Am、Cm的正序络合和NO_3~-与Am、Cm的倒序络合形成NO_3~-DTPA~(-5)体系,首先研究了CH_3OH-NH_4NO_3-HNO_3-DTPA-阴离子交换树脂体系(β=3.5),Abstract: A new process of anion exchange in a system of CH3OH-LiNO3-HNO3-DTPA is described to separate Cm from Am.The separation factor is 5 as compared to 3 for the old system.This system also can separate Am and Cm from fission products including light rare earth elements and can separate the rare earth elements from each other.
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