Simultaneous Analysis of Roxarsone and Its Metabolites by Liquid Chromatography-Hydrodide Generation-Atomic Fluorescence Spectrometry

文献类型： 外文期刊

第一作者： Huang Lian-Xi

作者： Huang Lian-Xi;He Zhao-Huan;Zeng Fang;Yao Li-Xian;Zhou Chuang-Min;Guo Bin

作者机构：

关键词： Liquid chromatography;Atomic fluorescence spectrometry;Arsenic speciation;Roxarsone;Metabolites

期刊名称：CHINESE JOURNAL OF ANALYTICAL CHEMISTRY （ 影响因子：1.134； 五年影响因子：0.909 ）

ISSN： 0253-3820

年卷期： 2010 年 38 卷 9 期

页码：

收录情况： SCI

摘要： Simultaneous determination of five speciations of arsenic compounds including arsenite, arsenate, monomethylarsonic acid, dimethylarsinic acid, and roxarsone was studied by liquid chromatography-hydrodide generation-atomic florescence spectrometry. It was showed that five speciation of arsenic compounds could be separated through C(18) reversed phase column using NaH(2)PO(4):CH(3)OH solution containing 0.5 mmol/L tetrabutyl ammonium bromide as mobile phase at the gradient elution condition; Arsenic compounds could form optimal fluorescence signal using 20 g/L K(2)S(2)O(8) as UV digest oxidant, 7% hydrochloric acid as carrying solution and 20 g/L KBH(4) solution as reducing agent. A good linear relationship between fluorescence peak area and concentration of five kinds of arsenic compounds in certain range was obtained. The detection limit of arsenic compounds was not more than 10.0 mu g/L, recoveries were controlled in the range of 81.4% - 105.6% and relative standard deviations less than 4.0%. This method can be applied to analyze the concentration of roxarsone and its metabolites such as arsenite, arsenate, monomethylarsonic acid, dimethylarsinic acid in feed, chicken manure, soil and plant samples.

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