Analytical Sciences
Online ISSN : 1348-2246
Print ISSN : 0910-6340
ISSN-L : 0910-6340
SELECTIVE EXTRACTION AND SEPARATION OF ACTINIDES WITH IONIZABLE CROWN ETHERS
CHIEN. M. WAIH. S. DUYOSHIHIRO MEGUROZENKO YOSHIDA
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1991 Volume 7 Issue Supple Pages 41-44

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Abstract

Solvent extraction characteristics of Th, U, Np, Pu, Am and Cm ions of various oxidation states by ionizable crown ethers such as sym-dibenzo-16-crown-5-oxyacetic acid and sym-dibenzo-16-crown-oxyacetylhydroxamic acid were studied. From results of pH-dependence of the distribution ratio of metal ions the ionizable crown ethers are promising for the application in the separation and preconcentration of actinide elements. The extracted species of Th(IV), U(VI) and Am(III) were confirmed to be Th(OH)2L2 (L; crown ether), UO2(OH)L and Am(OH)L2, respectively.

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