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Determination of methylmercury in fish and aqueous samples using solid-phase microextraction followed by gas chromatography–atomic fluorescence spectrometry

✍ Scribed by Yong Cai; Sugunya Monsalud; Kenneth G. Furton; Rudolf Jaffé; Ronald D. Jones

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 91 KB
Volume: 12
Category: Article
ISSN: 0268-2605
DOI: 10.1002/(sici)1099-0739(199808/09)12:8/9<565::aid-aoc762>3.0.co;2-k

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✦ Synopsis

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.

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