Abstract − Analytical Sciences, 19(6), 897 (2003).
Speciation Analysis of Arsenic in Traditional Chinese Medicines by Hydride Generation-Atomic Fluorescence Spectrometry
Li-li YANG,* Li-rong GAO,* and De-qiang ZHANG**
*College of Chemistry & Environmental Science, Hebei University, Baoding, 071002, P. R. China
**Hebei Academy of Sciences, Shijiazhuang, 050081, P. R. China
**Hebei Academy of Sciences, Shijiazhuang, 050081, P. R. China
A method has been described for the determination of arsenic species (arsenite and arsenate) by hydride generation-atomic fluorescence spectrometry (HG-AFS). The experimental conditions that influence the fluorescence intensity and the reduction of arsenic were investigated and optimized, and the influences from foreign ions and their elimination were studied. The detection limit was found to be 79.7 ng L-1. The proposed method was applied to the determination of arsenic species in water leachate of traditional Chinese medicines with a recovery range of 91.1 - 109.5%.
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