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Type: Artigo de periódico
Title: Coupling of dynamic headspace sampling and solid phase microextraction
Author: Silva, RC
Aquiar, PMS
Augusto, F
Abstract: A simple lob-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.
Subject: gas chromatography
solid phase microextraction
dynamic headspace analysis
sample preparation
volatile organic compounds
Country: Alemanha
Editor: Vieweg
Citation: Chromatographia. Vieweg, v. 60, n. 41984, n. 687, n. 691, 2004.
Rights: fechado
Identifier DOI: 10.1365/s10337-004-0446-y
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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