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J Chromatogr Sci

Title:		Potential of solid-phase microextraction fibers for the analysis of volatile organic compounds in air
Author(s):		Tuduri L; Desauziers V; Fanlo JL;
Address:		"Laboratoire Genie de l'Environnement Industriel, Ecole des Mines d'Ales, France. Ludovic.Tuduri@ema.fr"
Journal Title:		J Chromatogr Sci
Year:		2001
Volume:		39
Issue:		12
Page Number:		521 - 529
DOI:		10.1093/chromsci/39.12.521
ISSN/ISBN:		0021-9665 (Print) 0021-9665 (Linking)
Abstract:		"This work presents the usefulness of five different solid-phase microextraction fibers in the screening of volatile organic compound (VOC) traces in air samples. The performances of these fibers are compared by studying the sorption kinetics in an equimolar gaseous mixture of eleven VOCs. For each fiber, static and dynamic sampling are compared. It is shown that repeatability is better for the dynamic mode (less than 6% for dynamic sampling and 10% for static sampling). The equilibrium time and the sensitivity vary considerably from one fiber type to another. As an example, the classical polydimethylsiloxane (PDMS) coating presented the shortest equilibration time (5 min) but also the poorest sensitivity, whereas the PDMS-Carboxen showed the longest extraction time but the greatest sensitivity. The estimation of the quantity of VOCs fixed on the target fiber allows for the determination of the different affinities of the compounds with the involved sorbent and relates them with physicochemical properties of the molecules. Competitive sorption is observed for the fibers involved with the adsorption process (i.e., PDMS-divinylbenzene and PDMS-Carboxen fibers). These competitions can lead to SPME calibration problems and thus bad quantitative analysis"
Keywords:
Notes:		"PubMed-not-MEDLINETuduri, L Desauziers, V Fanlo, J L eng 2002/01/05 J Chromatogr Sci. 2001 Dec; 39(12):521-9. doi: 10.1093/chromsci/39.12.521"