In uence of the nature of the diluent on the extraction capacity of N,N,N',N'-tetrabutyldiglycolamide to Eu(III), Am(III) and Cm(III)

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Resumo

The in uence of HNO3 concentration on the extraction of Eu(III), Am(III) and Cm(III) by N,N,N',N'tetrabutyldiglycolamide in 5 diluents (nitrobenzene, toluene, 1,2-dichloroethane, 1,1,2,2-tetrachloroethane and chloroform) was studied. The dependence of the distribution ratios of the listed metals on the nature of the diluent was examined. The extraction of Eu(III), Am(III) and Cm(III) decreases in the following order: nitrobenzene > m -tri uoromethylnitrobenzene > mixture of n -dodecane and decanol-1 (90 : 10 vol/vol) > tetrachloromethane > 1,2-dichloroethane > benzene > 1,1,2,2-tetrachloromethane > toluene > chloroform. The conditions for the separation of Eu(III)/Am(III) and Am(III)/Cm(III) pairs were determined. The explanation of the observed increase of the Am(III)/Cm(III) separation factors with the increase of the nitric acid concentration in the equilibrium aqueous phase was suggested.

Sobre autores

V. Sharov

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences

Email: sharov.vladislav.4444@gmail.com

G. Kostikova

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences

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