Extraction—spectrophotometric determination of manganese(II) with xanthates |
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Authors: | Yoshiaki Sasaki |
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Affiliation: | Department of Chemistry, Faculty of Science, Yamaguchi University, Yoshida, Yamaguchi-shi, Yamaguchi 753 Japan |
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Abstract: | Manganese(II) (0.04–2 μmol) is extracted into chloroform from an aqueous phase at pH 6.5–9.0, containing a large excess of (n-butyl) xanthate and measured spectrophotometrically at 457 nm. The apparent molar absorptivity is 5.5 × 103 dm3 mol-1 cm-1. The extractability of the manganese complexes decreases in the order n-butyl = benzyl- ? n-propyl- ? ethyl- ? methyl-xanthate. Interfering ions can be removed by a preliminary extraction with ethylxanthate. Ni, Co, Zn, Cd, Pb, Hg(II), Fe(III), As(III), Ce(III), Se(IV), V(V), Mo(VI), and the alkali and alkaline earth metals do not interfere. |
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