Speciation of organotin compounds in shellfish by liquid chromatography — fluorimetric detection
2001
Abstract A method for the determination of butyltin and phenyltin species in marine organisms by liquid chromatography is described. Analytes are extracted from the samples using ethyl acetate and hydrochloric acid. A clean-up step based on a solid-phase extraction using a cation exchange bonded phase has been developed to remove coextracted substances from the ethyl acetate extract. Determination is carried out by gradient elution on a silica-based C 18 column with mobile phases consisting of methanol–water–acetic acid mixtures and using fluorimetric detection. The method, which allows the determination of the analytes at the ng g −1 level, has been applied to the analysis of diphenyltin, dibutyltin, triphenyltin and tributyltin in oyster and mussel tissues.
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