Chromatographia

, Volume 60, Issue 11–12, pp 687–691 | Cite as

Coupling of Dynamic Headspace Sampling and Solid Phase Microextraction

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Abstract

A simple lab-made apparatus allowing the use of a SPME fiber as sorptive device for isolation of analytes from varied samples using dynamic headspace sampling (DHS) is presented here. The principal parameters for the operation of this device - the extraction time and the flow of purging gas - were studied using aqueous test solutions of volatile and semi-volatile analytes. Compared to conventional HS-SPME, DHS-SPME provided a substantial reduction in the extraction time with linearity, accuracy and precision comparable to the conventional approach. For a complex matrix such as mango pulp, the extraction efficiency of volatiles using the DHS-SPME combination was up to six times higher than that of conventional HS-SPME.

Keywords

Gas chromatography Solid phase microextraction Dynamic headspace analysis Sample preparation Volatile organic compounds 
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Notes

Acknowledgments.

This work was financed by FAPESP (Foundation for Research Support of the State of São Paulo) and FAEP (Fund for Research and Teaching of the State University of Campinas).

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Copyright information

© Friedr. Vieweg&Sohn/GWV Fachverlage GmbH 2004

Authors and Affiliations

  1. 1.Institute of ChemistryState University of Campinas (Unicamp)CampinasBrazil

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