Comparison of quarter-hourly on-line dynamic headspace analysis to purge-and-trap analysis of varying volatile organic compounds in drinking water sources

On-line dynamic headspace analysis was refined for the quarter-hourly monitoring of select volatile organic compounds (VOCs) in ground and surface waters, for extended periods of time. Hourly comparisons were made to on-line purge-and-trap analysis, and to purge-and-trap analysis after sample preser...

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Bibliographic Details
Published in:Journal of Chromatography A 1990, Vol.513, p.47-54
Main Authors: Schnable, Joseph G., Dussert, Bertrand, Suffet, Irwin H., Hertz, Charles D.
Format: Article
Language:English
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Summary:On-line dynamic headspace analysis was refined for the quarter-hourly monitoring of select volatile organic compounds (VOCs) in ground and surface waters, for extended periods of time. Hourly comparisons were made to on-line purge-and-trap analysis, and to purge-and-trap analysis after sample preservation and storage. Variations in VOC concentrations of 6047% biweekly, 222% daily, 97% hourly, and 35% quarter-hourly were observable, with the 15-min cycle of the dynamic headspace analysis. The headspace analyzer had superior retention time stability, required less maintenance, and 1 4 the analysis time as a typical purge-and-trap-gas chromatograph system used for hourly comparisons.
ISSN:0021-9673
DOI:10.1016/S0021-9673(01)89423-1