Calibration of a Commercial Solid-Phase Microextraction Device for Measuring Headspace Concentrations of Organic Volatiles

Solid-phase microextraction (SPME) is a versatile new technique for collecting headspace volatiles prior to GC analysis. The commercial availability of uniform SPME fibers makes routine, practical quantitation of headspace concentrations possible, but straightforward information for relating GC peak...

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Bibliographic Details
Published in:Analytical chemistry (Washington) 1997-02, Vol.69 (3), p.364-372
Main Author: Bartelt, Robert J
Format: Article
Language:English
Subjects:
Analytical chemistry
Calibration
Chemistry
Chromatographic methods and physical methods associated with chromatography
Exact sciences and technology
Gas chromatographic methods
gas chromatography
Gases
headspace analysis
Instruments
microextraction
poly(dimethylsiloxane)
solid phase extraction
solid-phase microextraction
VOCs
volatile compounds
Volatile organic compounds
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Summary:Solid-phase microextraction (SPME) is a versatile new technique for collecting headspace volatiles prior to GC analysis. The commercial availability of uniform SPME fibers makes routine, practical quantitation of headspace concentrations possible, but straightforward information for relating GC peak areas from SPME analyses to headspace concentrations has not been available. The calibration factors (amount absorbed by the fiber divided by headspace concentration) were determined for 71 compounds using SPME fibers with a 100 μm poly(dimethylsiloxane) coating. The compounds ranged from 1 to 16 carbons in size and included a variety of functional groups. Calibration factors varied widely, being 7000 times higher for tetradecane than for acetaldehyde. Most compounds with a Kovats retention index of
ISSN:0003-2700
1520-6882
1520-6882
DOI:10.1021/ac960820n