微波消解-氢化物原子荧光光谱法测定粤东地区海产品中砷的研究

Determination of Arsenic in Seafood by Hydride Generation-atomic Fluorescence Spectrometry Combined with Microwave Oven Digestion

[目的]建立一种测定海产品中微量砷的有效方法。[方法]采用微波消解-氢化物原子荧光光谱法测定了粤东地区海产品中砷的含量。[结果]砷在1.0～50.0μg/L范围内线性关系良好,相关系数为0.995,方法的检出限为0.021 07μg/L,相对标准偏差为0.932%。部分海产品的含砷量超过国家标准,其超标原因可能与沿海地区的工业污染有关。[结论]该方法试剂用量少、污染小、简便、快速、准确,适于各类海产品中砷含量的检测。

[ Objective ] The aim was to establish an effective determination method of arsenic in seafood. [ Method ] Contents of arsenic in seafood samples from eastern Guangdong area were determined by hydride generation-atomic fluorescence spectrometry combined with microwave oven di- gestion. [ Result ] The linear range for detection of arsenic was 1.0 -50.0 μg/L,which showed a good linear relationship, and its correlation coef- ficient was 0. 995. The detection limit and relative standard deviation were 0.021 07 μg/L and 0.932% ,respectively. Contents of arsenic in some seafood samples were more than the national standard ,which could be caused by industrial pollution in coastal areas. [ Conclusion] The method is simple, rapid and accurate, so it is applied to the determination of arsenic in seafood samples.