Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 985, Issue 1-2, Pages 221-232Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0021-9673(02)01471-1
Keywords
malt whisky; stir bar sorptive extraction; solid-phase microextraction; volatiles
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Blended Scotch whisky was analysed by solid-phase microextraction (SPME) and stir bar sorptive extraction (SBSE) to study the composition of the volatiles. For SPME analysis, three different fibres were compared, poly(dimethylsiloxane) (PDMS) (100 mum), poly(acrylate) (PA) (85 mum) and divinylbenzene-Carboxen on poly(dimethylsiloxane) (DVB-CAR-PDMS) (50/30 mum). It was found that the PDMS and DVB-CAR-PDMS fibres showed a higher enrichment capacity than PA, as well as a better reproducibility. The influence of sampling time, temperature and salt addition on the enrichment of volatiles as well as the difference between liquid and headspace SPME were studied. An optimum SPME method was developed. Finally a more recent sample preparation technique, namely SBSE was evaluated to extract whisky volatiles. (C). 2002 Elsevier Science B.V. All rights reserved.
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