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KMID : 1059519950390070524
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Journal of the Korean Chemical Society
1995 Volume.39 No. 7 p.524 ~ p.529
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Separation of Sb(Ⅲ) by the Silica Gel Bonded 15-crown-5
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Kim Hae-Joong
Kim Jeong
Kim Si-Joong
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Abstract
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The separation efficiency of metal ions by using silica gel bonded 15-crown-5 (SGBM) has been determined by column chromatography in aqueous solution at pH 1. Bindinng constants and separation factors for several SGBM-Metal interactions were measured in aqueous solution. The order of these binding constants and separation factors with metal ions was Li(Ⅰ) < Sr(Ⅱ) < Na(Ⅰ) < Cu(Ⅱ) < Mg(Ⅱ) < K(Ⅰ) < Ca(Ⅱ) < Bi(Ⅲ) < Sb(Ⅲ). These results were explained in terms of the size effect and electron density effect. This experimental results showed good efficiency for separation of Sb3+ from mixtures of alkali, alkaline earth metal ions, and Cu2+ in aqueous solution.
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