ジエチルジチオカルバミン酸塩によるアルカリ性溶液中のZn, Ni, Feの抽出

星 三千男; 山本 克宗; 米沢 仲四郎; 後藤 覚司; 佐川 千明

doi:10.3769/radioisotopes.35.12_619

Solvent Extraction of Zn, Ni and Fe in the Alkaline Solution with Diethyldithiocarbamate

Michio HOSHI, Katsumune YAMAMOTO, Chushiro YONEZAWA, Satoshi GOTO, Chiaki SAGAWA

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Keywords: solvent extraction, zinc, nickel, iron, diethyldithiocarbamate, hydrolysis, formation constant, carbonate ion

JOURNAL FREE ACCESS

1986 Volume 35 Issue 12 Pages 619-624

DOI https://doi.org/10.3769/radioisotopes.35.12_619

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Abstract

The extraction behavior of Zn, Ni and Fe in the alkaline solution has been studied with diethyldithiocarbamate.
Zn (II), Ni (II) and Fe (II) can be extracted into CCl₄, whereas Fe (III) remains in the aqueous layer. The behavior of Zn (II), Ni (II) and Fe (II) is explained on the basis of the extraction equilibrium taking into account the hydrolysis reactions of these ions.
The apparent formation constant of ZnCO₃ is calculated to be 5×10⁶. Accordingly, the presence of carbonate has no effect on the extraction of Zn (II) under a given condition.

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