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在天然放射性铅、铋和钋中,~(210)Pb、~(210)Bi、~(210)Po(RaD、RaE、RaF)和~(212)Pb、~(212)Bi(ThB、ThC)是最常见的。分离这些天然放射性核素的方法很多,有电化学法、共沉淀法、溶剂萃取法、离子交换法和纸上电泳法等。在溶剂萃取法中,分离~(210)Po时所用的萃取剂有二苯硫腙、铜铁试剂、TTA和TBP等。但这些方法仅仅用于从陈氢气管中提取~(210)Po,并且操作麻烦。Moore曾用三苄胺(TBA)作萃取剂,发现对钋的
(210) Bi, ~ (210) Po (RaD, RaE, RaF) and ~ (212) Pb, ~212 Bi (ThB, ThC) in natural radioactive lead, ) Is the most common. There are many ways to separate these natural radionuclides, such as electrochemical method, co-precipitation method, solvent extraction method, ion exchange method and on-paper electrophoresis. In solvent extraction, the extractants used to separate ~ (210) Po are diphenhydrazone, copper and iron reagents, TTA and TBP. However, these methods are only used to extract ~ (210) Po from the hydrogen pipe, and the operation is cumbersome. Moore once used tribenzyl amine (TBA) as an extractant and found that it is pomfret