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Enhanced extraction capacity and chemical noise reduction in solid-phase microextraction

✍ Scribed by Monika Moeder; Steffi Schrader

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
636 KB
Volume
27
Category
Article
ISSN
1615-9306

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✦ Synopsis

Abstract

Solid‐phase microextraction fibres with different lengths, coatings (polydimethylsiloxane, polyacrylate, Carbowax/divinylbenzene), film thicknesses, and mounting techniques were examined in combination with GC‐MS with regard to their enhanced extraction capacities and fibre ‘bleeding’. A series of phenols and halogenated aromatics with diverse physicochemical properties were investigated to characterize the effects of the enhanced extraction capacities of solid‐phase microextraction fibres. Fibre extension was found to be effective for the microextraction of compounds with high log K~ow~ values, whereas increasing both coating thickness and fibre length is most effective for the microextraction of more polar compounds such as phenols. Almost no bisphenol A was released when custom‐made polydimethylsiloxane fibres were used, finally eliminating a drawback of endocrine disrupter analysis by solid‐phase microextraction.

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