Study on Extraction of UO_2~(2+),Pu~(4+),Am~(3+) ,Eu~(3+) and TcO_4~- with 20%TBP-20%TRPO/Kerosene Mixture in the Presence of High Concentration UO_2~(2+)

The extraction of UO 2 2+ with 20%TBP(tributyl phosphate) 20%TRPO(mixed trialkyl phosphine oxides)/Kerosene mixture were studied.The effect of sodium solution with conventional concentration for extraction of UO 2 2+ by 20%TBP 20%TRPO/kerosene mixture was investigated.The extraction distribution ratios of Pu 4+ ,Am 3+ ,Eu 3+ and TcO 4 - with 20%TBP 20%TRPO/kerosene in the presence of uranium of high concentration were measured and compared with the case of absence of UO 2 2+ .