Speciation of Arsenic(Ⅲ) and Arsenic(Ⅴ) in Water by Hydride Generation Atomic Fluorescence Spectrometry
MA Ge1,XIE Wen-bing2*,LIU Jing1,LI Xin-yang1,JIN Yan-wei1
1. Department of Applied Chemistry, Changchun Institute of Technology，Changchun 130021, China 2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
Abstract：A method for arsenic(Ⅲ) and arsenic(Ⅴ) speciation in water samples using HG-AFS was established. Without any preseparation technique, the speciation was simply accomplished by just adjustment of the acidity for hydride generation. For a sensitive,reproducible and accurate determination, other conditions for hydride generation, such as the concentration of NaBH4 and the added amount of KI as the reductant for arsenic(Ⅴ), were also optimized, and the interference experiment was carried out for concomitant elements. As a result, a detection limit of 0.026 μg·L-1,a relative standard deviation of 2%, and a recovery of 97.5%-103.0% were obtained，indicating the robustness of the method.
Key words：Hydride generation-atomic fluorescence spectrometry;Water;Arsenic(Ⅲ) and arsenic(Ⅴ)
马戈1,谢文兵2*,刘晶1,李昕洋1,金彦伟1. 氢化物发生原子荧光光谱法直接测定水样中砷(Ⅲ)和砷(Ⅴ)[J]. 光谱学与光谱分析, 2007, 27(04): 807-809.
MA Ge1,XIE Wen-bing2*,LIU Jing1,LI Xin-yang1,JIN Yan-wei1 . Speciation of Arsenic(Ⅲ) and Arsenic(Ⅴ) in Water by Hydride Generation Atomic Fluorescence Spectrometry. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(04): 807-809.
