从辐照过的钍中分离镤的研究
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Abstract
研究了以１－苯基－３－甲基－４－苯甲酰基吡唑啉酮－５（ＰＭＢＰ）和三异辛胺（ＴＩＯＡ）为萃取剂，盐酸－氢氟酸溶液为反萃剂，从中子辐照过的钍中分离纯化镤的一个快速、有效的流程。对流程的一些主要步骤中的分离条件作了研究。以钍的裂变产物为多重示踪剂检验了该流程，得到了主要杂质元素的去污因子，给出了镤的回收率。A rapid and efficient procedure for separation of trace protactinium from thorium irradiated by 14 MeV neutrons is described by using 1 phenyl 3 methyl 4 benzoylpyrazolone 5(PMBP) and triisooctyl amine (TIOA) as extractants and hydrochloric hydrofluoric acid solution as back extractant.The separating conditions in some main steps of this procedure has been studied.The decontamination factors for principal impurity elements and the recovery efficiency for 233 Pa has been obtained.The procedu..
