Indirect determination of trace amounts of silicon by ICP-MS after separation by gel chromatography.

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  • NAKAMURA Yasushi
    Nippon Mining Co., Ltd., Research and Development Division, Analysis Research Department
  • KOBAYASHI Yoshio
    Nippon Mining Co., Ltd., Research and Development Division, Analysis Research Department

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Other Title
  • ゲルクロマトグラフィー／誘導結合プラズマ質量分析法による微量ケイ素の間接定量
  • ゲル クロマトグラフィー ユウドウ ケツゴウ プラズマ シツリョウ ブンセキホ

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Abstract

An indirect determination of trace amounts of silicon by ICP-MS based on the determination of molybdenum originating from molybdosilicic acid has been investigated. It was found that molybdosilicic acid is strongly adsorbed on a Sephadex gel column from a nitric acid medium and can be easily eluted with ammonia water, whereas molybdate ion is not adsorbed on the gel column. The gel consisted of dextran cross-linked by epichlorohydrin. Molybdosilicic acid was formed by the procedure of JIS H 1422. Molybdenum-98 in the eluate was determined by ICP-MS after eliminating ammonia from it by boiling. This method was applied to the analysis of high purity copper.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 38 (5), 224-227, 1989

    The Japan Society for Analytical Chemistry

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