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Extraction and determination of butylin compounds in shellfish by hydride generation—gas chromatography—quartz furnace atomic absorption spectrometry

Abstract : The method described involves the conversion of butyltin compounds extracted from shellfish into volatile hydrides by sodium tetrahydroborate, cryogenic trapping and selective volatilization followed by on-line quartz furnace atomic absorption spectrometric detection. Several sample pretreatment procedures were compared with emphasis on their accuracy, reproducibility and respect for the speciation of tin. Digestion with 0.083 M HCl in 16.7% methanol under sonication for 1 h is proposed. The recoveries of mono-, di- and tributyltin compounds from spiked mussel and oyster samples ranged from 96 to 99% with low degradation of butyltins (< 9%). Detection limits were in the 2–3 ng Sn g−1 (wet weight) range. The method was applied to wild and commercial samples of oysters. mussels and scallops and fairly high concentrations of butyltin compounds were measured.
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Florence Pannier, A. Astruc, M. Astruc. Extraction and determination of butylin compounds in shellfish by hydride generation—gas chromatography—quartz furnace atomic absorption spectrometry. Analytica Chimica Acta, Elsevier Masson, 1994, 287 (1-2), pp.17-24. ⟨10.1016/0003-2670(94)85096-8⟩. ⟨hal-03591018⟩

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