| Title: | Comparison of quarter-hourly on-line dynamic headspace analysis to purge-and-trap analysis of varying volatile organic compounds in drinking water sources |
| Author(s): | Schnable JG; Dussert B; Suffet IH; Hertz CD; |
| Address: | "Department of Chemistry and Environmental Studies Institute, Drexel University, Philadelphia, PA 19104" |
| DOI: | 10.1016/s0021-9673(01)89423-1 |
| Abstract: | "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 had 1/4 the analysis time as a typical purge-and-trap-gas chromatograph system used for hourly comparisons" |
| Keywords: | "Calibration Chromatography, Gas/instrumentation/*methods/standards Drinking Time Factors Water/*analysis Water Pollutants, Chemical/*analysis;" |
| Notes: | "MedlineSchnable, J G Dussert, B Suffet, I H Hertz, C D eng Comparative Study Research Support, Non-U.S. Gov't Netherlands 1990/07/27 J Chromatogr. 1990 Jul 27; 513:47-54. doi: 10.1016/s0021-9673(01)89423-1" |
