从含UO_2~2+、TcO_4~-的TRPO/煤油和TRPO-TBP/煤油中反萃Pu(Ⅳ)的研究

STUDY ON BACK-EXTRACTION OF Pu(Ⅳ) FROM TRPO/KEROSENE AND TRPO TBP/KEROSENE CONTAINING UO_2~2+ AND TcO_4~-

摘要: :研究了草酸硝酸混合液、甲酸、羟基乙酸、酒石酸和柠檬酸等对 30 %TRPO(三烷基氧膦 ) /煤油和 2 0 %TRPO 2 0 %TBP(磷酸三丁酯 ) /煤油体系中Pu(Ⅳ )的反萃及对UO2 2 +、TcO4 - 的影响 ,选出了可能在高浓度UO2 2 +存在下有效反萃上述两种有机相中Pu(Ⅳ )的反萃剂

Abstract: The back extraction of Pu(Ⅳ) and the influences on UO 2 2+ and TcO 4 - with oxalic acid nitric acid solution, formic acid, glycolic acid, tartaric acid and citric acid respectively from 30 %TRPO(mixed trialkyl phosphine oxide)/kerosene and 20 %TRPO 20 %TBP(tributyl phosphate)/kerosene systems are studied. Based on the experimental results, the possible back extractants of Pu(Ⅳ) in the present of high concentration of UO 2 2+ from the above two organic phases are proposed.