Speciation Analysis of Arsenic in Traditional Chinese Medicines by Hydride Generation-Atomic Fluorescence Spectrometry with Ion Exchange Resin Separation
YANG Li-li1, GAO Li-rong2，ZHANG De-qiang3*
1. College of Chemistry, Hebei Normal University, Shijiazhuang 050016，China 2. College of Chemistry & Environmental Science, Hebei University, Baoding 071002，China 3. Hebei Academy of Sciences, Shijiazhuang 050081, China
Abstract：A method for the determination of arsenic species (arsenide, arsenate) in traditional Chinese medicines using hydride generation atomic fluorescence spectrometry(HG-AFS) with ion exchange resin separation has been studied. The ion exchange resin was used to separate the arsenide and arsenate, and the separation conditions were investigated. The experimental conditions that influence the fluorescence intensity and the reduction of arsenic(Ⅴ) were investigated and optimized, and the influence of foreign ions and its elimination were studied. The proposed method was applied to the determination of arsenic species in water leachate of traditional Chinese medicines. A detection limit of 89.1 ng·mL-1 and a recovery range of 91.1％—109.3% were obtained.
Key words：Atomic fluorescence spectrometry-hydride generation;Traditional Chinese medicine;Arsenic speciation;Ion exchange resin
杨莉丽1，高丽荣2，张德强3* . 树脂分离-氢化物发生-原子荧光光谱法测定中草药中不同形态的砷 [J]. 光谱学与光谱分析, 2004, 24(04): 491-494.
YANG Li-li1, GAO Li-rong2，ZHANG De-qiang3* . Speciation Analysis of Arsenic in Traditional Chinese Medicines by Hydride Generation-Atomic Fluorescence Spectrometry with Ion Exchange Resin Separation. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(04): 491-494.
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