Improvement of Wet-Ashing for Total Arsenic Analysis by Hydride Generation Technique

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  • 水素化物発生法を用いる総ヒ素分析のための湿式灰化法の改良
  • アナリティカルレポート 水素化物発生法を用いる総ヒ素分析のための湿式灰化法の改良
  • アナリティカルレポート スイソカブツ ハッセイホウ オ モチイル ソウ ヒソ ブンセキ ノ タメ ノ シッシキ ハイカホウ ノ カイリョウ

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Abstract

We studied the wet-ashing condition and found a proper method for the decomposition of organoarsenic without using a closed microwave digestion oven system. The hydride generation technique is incapable of detecting organoarsenic, such as arsenobetaine and arsenocholine without decomposition. However, organoarsenic is hard to be decomposed by the conventional wet-ashing method. Therefore we developed open wet-ashing conditions and found optimized conditions (HNO3-H2SO4-HClO4 at 400°C or higher without dryness) to completely decompose organoarsenic.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 60 (8), 691-695, 2011

    The Japan Society for Analytical Chemistry

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