Determination of inorganic arsenic in rice by solid phase extraction and hydride generation atomic fluorescence spectrometry

文献类型： 外文期刊

第一作者： Huang, Yatao

作者： Huang, Yatao;Shan, Jihao;Fan, Bei;He, Yan;Xia, Shuangmei;Sun, Yufeng;Lu, Jia;Wang, Miao;Wang, Fengzhong

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期刊名称：ANALYTICAL METHODS （ 影响因子：2.896； 五年影响因子：2.716 ）

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收录情况： SCI

摘要： Inorganic arsenic (iAs) is a food safety concern worldwide due to its high toxicity, particularly in rice, which accumulates As more easily than other crops. Accordingly, low-cost, simple methods are needed for accurate determination of iAs in food crops. We extracted total arsenic (As) from rice using HNO3 and then reduced arsenate (As5+) to arsenite (As3+) using thiourea. The combined As3+ was separated from organic As using polystyrene resin cartridges, and quantified by hydride generation-atomic fluorescence spectrometry (HG-AFS). This method achieved 1.1 mu g kg(-1) limit of detection, 3.6 mu g kg(-1) limit of qualification, and <6% relative standard deviation. Validation was performed using certified reference materials and conventional high-performance liquid chromatography-inductively coupled plasma mass spectrometry (HPLC-ICPMS). Compared with LC-HG-AFS or LC-ICPMS, this method appears suitable for general use because of its low cost.

分类号： O65

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