Simultaneous Determination of Arsenic and Selenium Species by Ion Exchange Chromatography-Hydride Generation-Atomic Fluorescence Spectrometry

作者：Wei Chang Jin; Liu Ji Xin^*; Pei Xiao Hua

来源：Chinese Journal of Analytical Chemistry, 2008, 36(8): 1061-1065.

• Arsenic
• selenium
• speciation analysis
• ion exchange chromatography
• atomic fluorescence spectrometry

Using ion chromatography-hydride generation-atomic fluorescence spectrometry (IC-HG-AFS), arsenite (As(III)) arsenate (As(V)) monomethylarsonic (MMA), dimethylarsinic acid (DMA), selenocystine (SeCys) selenite (Se (IV)) selenomethlonine (SeMet) were determined simultaneously. Various experimental parameters were optimized, such as the concentrations of HCl and KBH4, the operating condition dof AFS. With 100 microliter sample loop, the detection limits for As (III), DMA, MMA, As (V), SeCys, Se (IV) and SeMet were 0.2 mu g/L, 0.3 mu g/L, 0.2 mu g/L, 0.3 mu g/L, 0.6 mu g/L, 0.5 mu g/L and 3 mu g/L, respectivly, and relative standard deviations were less than 5% (n = 7). Applying the present procedure to the speciation analysis of arsenic and selenium in selenium nutritional supplement, good spiked recoveries from 91% to 115% were obtained.

• 出版日期2008-8