Selective Spectrophotometric Determination of Osmium in Aqueous Iodide Solutions or after Extraction with Trioctylamine-Carbon Tetrachloride

Maria BALCERZAK; Katarzyna KOMAR; Elzbieta SWIECICKA; Krzysztof KASIURA

doi:10.2116/analsci.13.33

Maria BALCERZAK, Katarzyna KOMAR, Elzbieta SWIECICKA, Krzysztof KASIURA

著者情報

キーワード: Noble metals analysis, osmium, iodide complex, spectrophotometry

ジャーナルフリー

1997 年 13 巻 1 号 p. 33-36

DOI https://doi.org/10.2116/analsci.13.33

詳細

Published: 1997/02/10 Received: 1996/08/17 Available on J-STAGE: 2006/07/07 Accepted: 1996/10/30 Advance online publication: - Revised: -
訂正情報
訂正日: 2006/07/07 訂正理由: - 訂正箇所: 論文抄録訂正内容: Wrong : Osmium and ruthenium can be selectively isolated from a mixture of the noble metals by distillation in the form of OsO₄ and RuO₄. In hydrochloric (or sulfuric) acid media and in the presence of iodide, OsO₄ is selectively reduced to osmium(IV) and the OsI₆^2- complex is formed. Quantitative conversion of Os(VIII) into this complex takes place in 0.8M I^- solutions and in 0.04M HCl (or 0.1M H₂SO₄) within 5 (or 10min), respectively. The OsI₆^2- complex reacts with trioctylamine ((C₈H₁₇)₃N) and the ion associate ((C₈H₁₇)_{3+)₂OsI₆^2- is formed. The ion associate can be isolated from aqueous solutions by extraction into carbon tetrachloride. Both the OsI₆^2- complex and the ion pair with trioctylamine can be used for spectrophotometric determination of osmium directly in aqueous solutions or after extraction into the organic solvent. Ruthenium does not interfere with the determination of osmium in the form of the OsI₆^2- complex.
Right : Osmium and ruthenium can be selectively isolated from a mixture of the noble metals by distillation in the form of OsO₄ and RuO₄. In hydrochloric (or sulfuric) acid media and in the presence of iodide, OsO₄ is selectively reduced to osmium(IV) and the OsI₆^2- complex is formed. Quantitative conversion of Os(VIII) into this complex takes place in 0.8M I^- solutions and in 0.04M HCl (or 0.1M H₂SO₄) within 5 (or 10min), respectively. The OsI₆^2- complex reacts with trioctylamine ((C₈H₁₇)₃N) and the ion associate ((C₈H₁₇)₃NH⁺)₂OsI₆^2- is formed. The ion associate can be isolated from aqueous solutions by extraction into carbon tetrachloride. Both the OsI₆^2- complex and the ion pair with trioctylamine can be used for spectrophotometric determination of osmium directly in aqueous solutions or after extraction into the organic solvent. Ruthenium does not interfere with the determination of osmium in the form of the OsI₆^2- complex.}

訂正日: 2006/07/07 訂正理由: - 訂正箇所: 著者情報訂正内容: Wrong : Maria BALCERZAK²⁾, Katarzyna KOMAR¹⁾, Elzbieta SWIECICKA¹⁾, Krzysztof KASIURA¹⁾
Right : Maria BALCERZAK¹⁾, Katarzyna KOMAR¹⁾, Elzbieta SWIECICKA¹⁾, Krzysztof KASIURA¹⁾

訂正日: 2006/07/07 訂正理由: - 訂正箇所: PDFファイル訂正内容: -

抄録

Osmium and ruthenium can be selectively isolated from a mixture of the noble metals by distillation in the form of OsO₄ and RuO₄. In hydrochloric (or sulfuric) acid media and in the presence of iodide, OsO₄ is selectively reduced to osmium(IV) and the OsI₆^2- complex is formed. Quantitative conversion of Os(VIII) into this complex takes place in 0.8M I^- solutions and in 0.04M HCl (or 0.1M H₂SO₄) within 5 (or 10min), respectively. The OsI₆^2- complex reacts with trioctylamine ((C₈H₁₇)₃N) and the ion associate ((C₈H₁₇)₃NH⁺)₂OsI₆^2- is formed. The ion associate can be isolated from aqueous solutions by extraction into carbon tetrachloride. Both the OsI₆^2- complex and the ion pair with trioctylamine can be used for spectrophotometric determination of osmium directly in aqueous solutions or after extraction into the organic solvent. Ruthenium does not interfere with the determination of osmium in the form of the OsI₆^2- complex.

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訂正情報

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