Summary
Alternate methods to the time consuming solvent extraction technique used in the characterization of groundwater contaminants were sought to reduce the analysis time and allow for automation. By adsorbing (ADS) groundwater samples on a quartz tube filled with graphitized charcoal (Carbotrap, Carbotrap C) and thermally desorbing it in a Envirochem Unacon 810 unit directly interfaced with a GC-MSD, it was possible to detect the major groundwater contaminants originating from several types of industrial landfills. Compounds such as aniline, dioxane, and phenols were measured simultaneously with minimal sample preparation. The results were compared to those obtained by dynamic thermal stripping (DTS) followed by GC-MS. These methods are much more cost effective than solvent extraction since they require only a few minutes of the analyst's time for the introduction of the sample. ADS was superior to DTS and solvent extraction for the analysis of water soluble compounds which are poorly extracted into solvents. DTS provided cleaner chromatograms and allowed for lower detection limit than ADS. The two techniques are therefore complementary.
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Swallow KC, Shifrin NS, Doherty PJ (1988) Environ Sci Technol 22:36–142
Reinhard M, Goodman NL, Barker JF (1984) Environ Sci Technol 18:953–961
Goodley PC, Thorp J Thermospray LC/MS and EPA Appendix VIII Compounds. Hewlett-Packard application note 23-5952-5851
Hellmann H (1988) Z Wasser-Abwasser Forsch 21:67–72
Chan CC, Martin JW, Pond PJ, Williams DT (1986) Proceedings of the EPA/APCA Symposium on the Measurement of Toxic Air Pollutants. Air and Waste Management Association Publ 71–83
Püttmann W (1988) Chromatographia 26:171–177
Rosen ME, Pankow JF (1990) Proceedings of the 4th National Outdoor Action Conference on Aquifer Restoration, Ground Water Monitoring and Geophysical Methods. National Water Well Assoc, pp 329–340
Pankow JF, Ligocki MP, Rosen MP, Isabelle LM, Hart KM (1988) Anal Chem 60:40–47
Mosesman NH, Betz WR, Corman SD (1988) LC-GC 6:328, 332, 334, 336
U.S. EPA (1987) Test methods for evaluating solid waste, physical/chemical methods, SW-846 Third edition, methods 3510 and 8270, revision 1, December
Pereira WE, Rostad CE (1986) Movement and fate of creosote waste in groundwater, Pensacola, Florida: U.S. Geological Survey Toxic Waste-Ground-Water Contamination Program. U.S.G.S. Water Supply paper 2285:33–40
Goerlitz DF, Troutman DE, Godsy EM, Franks BJ (1985) Environ Sci Technol 19:955–961
Lesage S, Riemann P, McBride RA (1989) Proceedings of Environmental Research: 1989 Technology Transfer Conference. Environment Ontario. Nov 4–6. 2:88–97
Barker JF, Barbash JE, Labonté M (1988) J Contam Hydrol 3:1–25
Lesage S, Ritch JK, Treciokas EJ (1990) Water Pollut Res J Can (in press)
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Lesage, S. Characterization of groundwater contaminants using dynamic thermal stripping and adsorption/thermal desorption-GC-MS. Fresenius J Anal Chem 339, 516–527 (1991). https://doi.org/10.1007/BF00323811
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DOI: https://doi.org/10.1007/BF00323811