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Sample treatment selection for routine mercury speciation in seafood by gas chromatography–atomic fluorescence spectroscopy
Author(s) -
GómezAriza J. L.,
Lorenzo F.,
GarcíaBarrera T.
Publication year - 2005
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/aoc.868
Subject(s) - chemistry , mercury (programming language) , methylmercury , organomercury , gas chromatography , organomercury compounds , atomic spectroscopy , genetic algorithm , cold vapour atomic fluorescence spectroscopy , environmental chemistry , atomic emission spectroscopy , atomic absorption spectroscopy , fluorescence spectroscopy , chromatography , sample preparation , fluorescence spectrometry , analytical chemistry (journal) , spectroscopy , detection limit , fluorescence , metal , bioaccumulation , organic chemistry , ecology , plasma , inductively coupled plasma , physics , quantum mechanics , computer science , biology , programming language
A general analytical strategy for mercury speciation in seafood samples has been proposed to increase sample throughput. This consists of the initial determination of total mercury content, and then mercury speciation using gas chromatography coupled to atomic fluorescence spectroscopy. The appropriate sample treatment for mercury speciation is selected between a method based on aqueous ethylation with sodium tetraethylborate (Approach A: a rapid methodology for samples with methylmercury concentrations between 150 and 2000 ng g −1 ) and another one based on the determination of organomercury chlorides (Approach B: a much more time‐consuming methodology, applicable to samples with methylmercury at 1.2–200 ng g −1 ). Both procedures have been used together for the analysis of bivalves and fish samples. Copyright © 2005 John Wiley & Sons, Ltd.