DETERMINATION OF METHYLMERCURY IN FISH SAMPLES USING GC/AA AND SODIUM TETRAETHYLBORATE DERIVATIZATION

被引:120
作者
FISCHER, R [1 ]
RAPSOMANIKIS, S [1 ]
ANDREAE, MO [1 ]
机构
[1] MAX PLANCK INST CHEM,DEPT BIOGEOCHEM,POB 3060,W-6500 MAINZ,GERMANY
关键词
D O I
10.1021/ac00054a019
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A simple technique is described for the rapid determination of methylmercury in fish tissue. Following simple dissolution in methanolic KOH solution, aqueous phase ethylation by derivatization with NaB(C2H5)4, cryogenic trapping on a packed chromatographic column, and GC separation, volatile mercury species are detected by atomic absorption spectrometry. Absolute detection limits are 4 pg of Hg for CH3Hg+ and 75 pg of Hg for labile Hg2+. Concentration detection limits for this optimized procedure are 4 ng of Hg for CH3Hg+ and 75 ng of Hg for labile Hg2+ per gram of pulverized dried fish tissue. Analysis of standard reference materials demonstrates the accuracy, precision, and reproducibility of the analytical method.
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页码:763 / 766
页数:4
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