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本文研究了磷酸三丁酯(TBP)——三辛胺(TOA)——环己烷体系在硝酸盐介质中对U(Ⅵ)的协同萃取,发现该体系有弱协萃效应,用斜率法确定协萃络合物组成为(R_3NH)UO_2(NO_3)_3·TBP。少量TOA加入到TBP后,能减少TBP的辐解。
In this paper, the synergistic extraction of U (Ⅵ) from the system of tributyl phosphate (TBP) -trioctylamine (TOA) -cyclohexane in nitrate media was studied. The synergistic extraction of U (Ⅵ) The complexing complex was identified as (R_3NH) UO_2 (NO_3) _3 · TBP. A small amount of TOA added to TBP can reduce the radiolysis of TBP.