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Original Articles

A sensitive solid-phase microextraction/gas chromatography-based procedure for determining pentachlorophenol in food

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Pages 777-783 | Received 09 Nov 2006, Accepted 14 Jan 2007, Published online: 20 Jun 2007
 

Abstract

A new method for the determination of pentachlorophenol (PCP) in different foods was developed using capillary gas chromatography (GC) and microwave induced-plasma atomic emission spectrometry (MIP-AED). The analyte is first derivatized and then extracted and pre-concentrated by solid-phase microextraction (SPME) in headspace (HS) mode. A clear matrix effect was found for the different samples investigated, so that standard addition was required for quantification. Detection limits of 0.03–6.0 ng g−1 were obtained, depending on the sample analysed. The method gave recoveries of 81–109% from spiked samples. Concentration levels of PCP ranged from 0.3 to 1.5 ng g−1 were found in honey, but no PCP was detected in other samples.

Acknowledgements

The authors are grateful to the Spanish Ministerio de Educacion y Ciencia, MEC (Project CTQ2006-08037/BQU) and Fundacion Séneca (CARM, Project 02993/PI/05) for financial support. R. Peñalver acknowledges a fellowship from MEC.

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