Determination of Diphenylarsinic Acid and Phenylarsonic Acid in Water Samples by High-Performance Liquid Chromatography/Inductively Coupled Plasma Mass Spectrometry

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  • IMAI Shiho
    The Institute of Basic Environmental Research, Environmental Control Center Co., Ltd.
  • KAWANAKA Youhei
    The Institute of Basic Environmental Research, Environmental Control Center Co., Ltd.
  • WANG Ning
    The Institute of Basic Environmental Research, Environmental Control Center Co., Ltd.
  • YUN Sun-Ja
    The Institute of Basic Environmental Research, Environmental Control Center Co., Ltd.

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Other Title
  • 高速液体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水試料中のジフェニルアルシン酸及びフェニルアルソン酸の定量
  • コウソク エキタイ 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 ブンセキホウ ニ ヨル ミズ シリョウ チュウ ノ ジフェニルアルシンサン オヨビ フェニルアルソンサン ノ テイリョウ

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Abstract

A method has been developed for the determination of diphenylarsinic acid (DPAA) and phenylarsonic acid (PAA) in water samples by high-performance liquid chromatography with inductively coupled plasma mass spectrometry. DPAA and PAA could be separated from five arsenic species {As(III), As(V), monomethylarsonic acid, dimethylarsinic acid and trimetylarsine oxide} by using a column packed with hydrophilic-resin-based cation-exchange resin and a gradient elution with nitric acid-ammonium nitrate. Good linearity (coefficient of correlation ≥ 0.998) of the calibration curve was obtained in the concentration range from 2 μg/l to 200 μg/l for DPAA and PAA. In addition, a solid-phase extraction method was developed to concentrate DPAA and PAA. The recoveries of DPAA and PAA from spiked groundwater samples were nearly 100% and the coefficients of variation were 2.6∼2.9 %(n = 5).<br>

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 54 (7), 631-636, 2005

    The Japan Society for Analytical Chemistry

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