高效液相色谱–电感耦合等离子体质谱联用法测定海水中的烷基汞  

Determination of Alkylmercury in Seawater by High Performance Liquid Chromatography–Inductivity Coupled Plasma Mass Spectrometry

作　　者：陈念念[1] 刘小骐[1] 李艳苹[1] 潘献辉[1] 

机构地区：[1]国家海洋局天津海水淡化与综合利用研究所,天津300192

出　　处：《化学分析计量》2015年第5期19-22,共4页Chemical Analysis And Meterage

基　　金：海洋公益性行业科研专项项目(201305039);国家科技支撑计划项目(2014BAB06B01)

摘　　要：建立了高效液相色谱与电感耦合等离子体质谱联用技术测定海水中烷基汞的方法。对色谱和质谱的实验条件进行了优化，在最优化条件下，5min内可实现甲基汞和乙基汞的分离和测定。甲基汞和乙基汞南检出限分别为5ng／L，3ng／L，线性相关系数均大于0．999，样品加标回收率为84％~94％，测定结果的相对标准偏差为3．3％-4．9％（n=7）。该法快速、简单、准确可靠，可用于海水及浓盐水样品中烷基汞的测定。A method for determination of alkylmereury in seawater based on high performance liquid chromatography coupled with inductivity coupled plasma mass spectrometry （HPLC-ICP-MS） was established. A series of working conditions were optimized. Under the optimal conditions, methylmercury （MeHg） and ethylmercury （EtHg） were baseline separated within 5 min. The system achieved detection limits of 5 ng / L for MeHg and 3 ng / L for EtHg, respectively. The linear correlation coefficient was more than 0.999, and the matrix spiked recoveries were in the range of 84%-94%, and the relative standard deviation （RSD） were 3.3%-4.9%（n=7）. The method is simple, rapid and reliable, which can be developed for the determination of alkylmercury in seawater and brackish water.

关 键 词：HPLC-ICP-MS 海水 烷基汞 形态分析 

分 类 号：O657.32[理学—分析化学]