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Solid-phase microextraction gas chromatography/mass spectrometric analysis of volatile organic compounds in water

✍ Scribed by Paola Bocchini; Christian Andalò; Diego Bonfiglioli; Guido C. Galletti

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
174 KB
Volume
13
Category
Article
ISSN
0951-4198

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✦ Synopsis

In this work, a solid-phase microextraction (SPME) method for the extraction of volatile organic compounds (VOCs) from water samples has been developed. Fifty-five volatile compounds (from the sixty listed in EPA method no. 524.2) were extracted from aqueous solutions using an SPME fiber coated with Carboxen-polydimethylsiloxane (Carboxen-PDMS), 75 mm film thickness. Time of sampling and chromatographic separation conditions were optimised. Standard solutions of VOC mixtures with concentrations as low as 0.05 ppb were analysed and their signal/noise ratios measured. Linearity of response for each component of the mixture was tested and mass spectral quality evaluated. A comparison with purge and trap analysis of VOCs was made. The method was applied to real-world samples of drinking, surface and leaching waters.

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