微波消解-氢化物发生-原子荧光光谱法测定海产品中痕量汞  

Determination of trace mercury in seafoods by microwave digestion-hydride generation-atomic fluorescence spectrometry

作　　者：汪娌娜[1] 舒青青[1] 高志杰[1] 

机构地区：[1]浙江省宁波市海曙区疾病预防控制中心,浙江宁波315012

出　　处：《中国卫生检验杂志》2012年第6期1250-1252,共3页Chinese Journal of Health Laboratory Technology

摘　　要：目的:建立海产品中痕量汞的微波消解-氢化物发生-原子荧光光谱测定方法。方法:采用微波消解法对样品进行前处理,以硼氢化钾为还原剂,5%盐酸为载流,氩气为载气,利用原子荧光法对样品中的痕量汞进行测定。结果:汞在0.1μg/L～10.0μg/L范围具有良好的线性,相关系数大于0.9990,RSD在1.7%～8.8%之间。采用本法对紫菜成分分析标准物质(GBW10023)和黄鱼成分分析标准物质(GBW08573)进行了方法验证,所测结果均在标准参考值允许范围之内。结论:本法具有简便、灵敏、准确的优点,适合海产品中痕量汞的测定。Objective：To establish an analytical method for the determination of mercury in aquatic products by hydride generation-atomic fluorescence spectrometry with microwave digestion.Methods：After the sample was pretreated by microwave digestion,the analysis was carried out by the atomic fluorescence spectrometry for the determination of trace mercury using potassium borohydride as a reducing agent,5% hydrochloric acid as the carrier and argon as the carrier gas.Results：The linearity of the method was good in the range of 0.1 μg/L～10.0 μg/L with a correlation coefficient of 0.9990.The RSDs were between 1.7% to 8.8%.Validation was performed by analysis of seaweed reference materials（GBW10023） and yellow-fin tuna reference material（GBW08573）.The measured results were in good agreement with the certified values.Conclusion：This method is simple,sensitive,accurate and suitable for the determination of mercury in seafood.

关 键 词：微波消解 原子荧光光谱法 汞 海产品 

分 类 号：O657.31[理学—分析化学]