Gas chromatography-inductively coupled plasma-mass spectrometry for mercury speciation in seafoods

被引：17

作者：

Li Yan ^{[1
]}

Liu Shu-Juan ^{[1
]}

Jiang Dong-Qing ^{[1
]}

Jiang Yan ^{[1
]}

Yan Xiu-Ping ^{[1
]}

机构：

[1] Nankai Univ, Coll Chem, Res Ctr Analyt Sci, Tianjin 300071, Peoples R China

来源：

CHINESE JOURNAL OF ANALYTICAL CHEMISTRY | 2008年 / 36卷 / 06期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

gas chromatography; inductively coupled plasma mass spectrometry; mercury speciation; hyphenated technique; seafoods;

D O I：

10.1016/S1872-2040(08)60042-0

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method was developed for mercury speciation in seafoods by on-line coupling gas chromatography to inductively coupled plasma mass spectrometry with an improved interface. The detection limits (S/N = 3) of methylmercury (MeHg (I)) and ethylmercury (EtHg (I)) were 0.5 and 1.0 pg (as Hg), respectively. The quantitative limits (S/N = 8) were 1.5 pg and 2.8 pg for MeHg (I) and EtHg (I), respectively. The linear range for the determination of methylmercury and ethylmercury was 1-1000 pg. The hybrid technique was applied for the speciation analysis of mercury in two certified reference materials, 14 fish and shellfish samples collected from local markets. The measured MeHg(I) concentrations were 3.7 ng/g - 236.6 ng/g (as Hg), and no EtHg (I) was detected. The standard addition recovery of MeHg (I) in real samples was 91%-102%.

引用

页码：793 / 798

页数：6

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