>Do any of you have experience with the use of stable chlorine isotopes to >look at fate and transport of chlorinated solvents in groundwater (PCE, TCE, >TCA, etc.)? Any references available for this application? >Thanks and Cheers! >Julie K. Sueker, Ph.D., P.E. Dear Julie, and others that may be interested, A couple of essential references in this research area are: van Warmerdam et al. (1995) Stable chlorine and carbon isotope measurements of selected chlorinated organic solvents. Appl. Geochem, 10: 547-552 Sturchio et al. (1998) Chlorine isotope investigation of natural attenuation of trichloroethene in an aerobic aquifer. Environ. Sci. Tech., 32: 3037-3042 Something else that you will want to keep an eye out for in the near future is a special issue of Organic Geochemistry edited by Barbara Sherwood-Lollar and Jun Abrajano concerning application of stable isotope analysis to contaminant geochemistry, which will contain the following papers (and probably others of interest): Huang et al. Carbon and chlorine isotope fractionation of chlorinated aliphatic hydrocarbons by evaporation Heraty et al. Isotopic fractionation of carbon and chlorine by microbial degradation of dichloromethane Lastly, I've compiled other references that may be of use, in a recent publication: Poulson and Drever (1999) Stable isotope (C, Cl and H) fractionation during vaporization of trichloroethylene. This has been Web-published in Environ. Sci. Tech. (and is available on the ACS publication web site), but I'm not sure when this will be hard-copy published. Cheers, Simon ***** Simon R. Poulson Dept. of Geological Sciences MS-172 University of Nevada-Reno Reno, NV 89557-0138 USA Phone: (775) 784-1104 Fax: (775) 784-1833 [log in to unmask] *****