Speciation analysis of arsenic in traditional Chinese medicines by hydride generation-atomic fluorescence spectrometry.
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%.
Yang
Li-li
LL
College of Chemistry & Environmental Science, Hebei University, Baoding, 071002, P.R. China.
Gao
Li-rong
LR
Zhang
De-qiang
DQ
D001151:Arsenic / Q000032:analysis* / Q000737:chemistry; D001894:Borohydrides / Q000737:chemistry; D004365:Drugs, Chinese Herbal / Q000032:analysis*; D006851:Hydrochloric Acid / Q000737:chemistry; D007202:Indicators and Reagents; D008567:Membranes, Artificial; D012015:Reference Standards; D013050:Spectrometry, Fluorescence; D013054:Spectrophotometry, Atomic
D001894:Borohydrides; D004365:Drugs, Chinese Herbal; D007202:Indicators and Reagents; D008567:Membranes, Artificial; C028371:potassium borohydride; D001151:Arsenic; D006851:Hydrochloric Acid