离子色谱-原子荧光检测海产品中的汞形态  

Speciation Analysis of Mercury Compounds in Seafood by Ion Chromatography-Atomic Florescence Spectrometry

作　　者：匡少平[1] 李慧新[1] 崔鹤[2] 董丽臻 

机构地区：[1]青岛科技大学环境与安全工程学院,山东青岛266042 [2]山东出入境检验检疫局,山东青岛266002 [3]中国海洋大学化学化工学院,山东青岛266100

出　　处：《青岛科技大学学报（自然科学版）》2016年第4期360-364,共5页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：国家重大科学仪器设备开发专项项目(2012YQ090229)

摘　　要：建立了离子色谱（IC）-紫外消解氢化物发生原子荧光（UV-HGAFS）联用技术测定海产品中3种常见汞化合物的方法。实验分别对离子色谱和原子荧光的仪器条件进行优化,在仪器的最优条件下,对不同提取液下的南极磷虾粉样品中的汞形态进行测定。结果表明：2%（V/V）甲酸＋1%（m/V）硫脲＋0.15%（m/V）氯化钾作为提取液时,提取效率最高,回收率在95.76%-116.1%之间,且RSD〈5%。所建立的方法准确性好、精密度高,样品前处理方法简便,较适用于水产品中汞化合物形态的测定。Ion chromatography-ultra violet-hydride generation-atomic florescence spectrometry was built to detect 3mercury species in seafood.The concentration of extraction reagents and instrument conditions were optimized.In optimized conditions,Euphausia superbatreated with multiple extracts were detected.The results showed that2%（V/V）HCOOH ＋ 1%（m/V）thiourea＋0.15%（m/V）KCl was the chosen extract,it has higher extractive efficiency,and the recoveries were between 95.76% and116.1% with a relative standard deviation（RSD）of less than 5%.The method has advantages of high sensitivity,effective separation,less amount of sample and wide linear range of determination.The method has high accuracy and stability,and could be used to determine the mercury speciation in seafood.

关 键 词：汞形态 提取液 南极磷虾 离子色谱-原子荧光(IC-AFS) 

分 类 号：O063[理学]