Summary
A gas chromatographic methodology with selective detection is presented for the analysis in wines and corks of pentachlorophenol residues, which are suspected to be the most likely precursors of some off-flavours described in several wine samples. After derivatisation, pentachlorophenol acetate residues were monitored by electrolytic conductivity detection and/or mass spectrometric detection in the selective ion mode at m/z 264 and 266. Recoveries varied from 80 to 96% for wine samples fortified with 5 to 100 μg l−1 and from 83 to 91% for corks (fortified at 25 to 100 μg kg−1). The proposed methodology allowed for a determination limit of μg l−1 for wine and 10 μg kg−1 for corks.
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Cooper, J.F., Tourte, J. & Gros, P. Determination of pentachlorophenol residues in wine and corks by solvent extraction methodology and specific gas chromatography detection. Chromatographia 38, 147–150 (1994). https://doi.org/10.1007/BF02290327
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DOI: https://doi.org/10.1007/BF02290327