Synergistic Extraction of Copper(II), Zinc(II) and Cadmium(II) with Monothiothenoyltrifluoroacetone and 1, 10-Phenanthroline

Hiroshi KAWAMOTO; Tsunemi AIBA; Hideo AKAIWA

doi:10.2116/analsci.5.755

Hiroshi KAWAMOTO, Tsunemi AIBA, Hideo AKAIWA

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Keywords: Synergistic extraction, monothiothenoyltrifluoroacetone, 1,10-phenanthroline, copper(II), zinc(II), cadmium(II), separation

JOURNAL FREE ACCESS

1989 Volume 5 Issue 6 Pages 755-757

DOI https://doi.org/10.2116/analsci.5.755

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Abstract

The synergistic extraction of copper(II), zinc(II) and cadmium(II) with monothiothenoyltrifluoroacetone (STTA=HR) and 1, 10-phenanthroline (phen=S) was examined. The main synergistic adducts extracted into the organic phase were found to be MR₂S (M=Cu, Zn, Cd) and MR₂S₂(M=Zn). The rather small stability constant for CuR₂S is attributable to the Jahn-Teller effect. The results were applied to establish a method of separation of cadmium(II) from zinc(II).

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