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Determination of methylmercury in fish and aqueous samples using solid‐phase microextraction followed by gas chromatography–atomic fluorescence spectrometry
Author(s) -
Cai Yong,
Monsalud Sugunya,
Furton Kenneth G.,
Jaffé Rudolf,
Jones Ronald D.
Publication year - 1998
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/(sici)1099-0739(199808/09)12:8/9<565::aid-aoc762>3.0.co;2-k
Subject(s) - chemistry , solid phase microextraction , injection port , derivatization , chromatography , methylmercury , gas chromatography , mass spectrometry , aqueous solution , mercury (programming language) , solid phase extraction , gas chromatography–mass spectrometry , sample preparation , extraction (chemistry) , analytical chemistry (journal) , environmental chemistry , medicine , bioaccumulation , computer science , programming language , surgery
Abstract An analytical method is described for methylmercury determination in fish and aqueous samples using solid‐phase microextraction (SPME) followed by gas chromatography–atomic fluorescence spectrometry (GC–AFS). The procedure involves aqueous‐phase derivatization of methylmercury species with sodium tetraethylborate in a sample vial and subsequent extraction with a silica fiber coated with poly‐(dimethylsiloxane). The mercury derivatives are desorbed in the splitless injection port of a gas chromatograph and subsequently analyzed by GC–AFS. The headspace SPME procedure is used and parameters affecting the extraction, adsorption and desorption are evaluated. Results for methylmercury analysis in standard reference material (DORM‐2) and fish samples are presented. © 1998 John Wiley & Sons, Ltd.