Extraction of trace thorium from hydrochloric acid media by 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone  

作　　者：YANG Wei-Fan, YUAN Shuang-Gui, XU Yan-Bing, XIAO Yong-Hou, XIONG Bing (Institute of Modern Physics, the Chinese Academy of Sciences, Lanzhou 730000) 

出　　处：《Nuclear Science and Techniques》2003年第4期246-248,共3页核技术（英文）

基　　金：the National Natural Science Foundation of China(No.10075063 and 10175079);by the Chinese Academy of Sciences(TK95T-03)

摘　　要：The paper describes the solvent extraction of trace thorium from hydrochloric acid media by1-phenyl-3-methyl-4-benzoyl-5-pyrazolone (PMBP) using a radioactive tracer technique. The percent extraction ofthorium was studied as a function of acidity, PMBP concentration and equilibrium time. The back-extraction behaviorof thorium from the organic phase was also tested. Separation of thorium was performed from fission products pro-duced in 14 MeV neutron bombardment of natural uranium by employing the PMBP extraction procedure. Thegamma-ray spectra of the separated thorium fractions show that thorium can be separated from most of fission prod-ucts and a large amount of uranium.The paper describes the solvent extraction of trace thorium from hydrochloric acid media by 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone (PMBP) using a radioactive tracer technique. The percent extraction of thorium was studied as a function of acidity, PMBP concentration and equilibrium time. The back-extraction behavior of thorium from the organic phase was also tested. Separation of thorium was performed from fission products produced in 14 MeV neutron bombardment of natural uranium by employing the PMBP extraction procedure. The gamma-ray spectra of the separated thorium fractions show that thorium can be separated from most of fission products and a large amount of uranium.

关 键 词：钍 盐酸 PMBP 溶剂萃取 放射性示踪剂 

分 类 号：O658.2[理学—分析化学]