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Follow on Google News | ![]() Isotope Hydrogeologist from Dragun Corporation to Present at Battelle ConferenceOne of those potential pieces of the puzzle will be addressed at an upcoming conference by Dr. Fatemeh Vakili, an isotope hydrogeologist at Dragun. Her presentation is formally titled, "Chlorine and Hydrogen Isotope Fractionation in Chlorinated Ethenes during Physical Processes." Below is Dr. Vakili's explanation of her upcoming presentation: In contaminant hydrogeology, confirmation of sorption processes in the subsurface helps in determining whether monitored natural attenuation is a viable remediation technique. Back-diffusion of contaminants that previously diffused into low permeability zones (e.g., clay aquitards or bedrock) can act as a secondary source of contamination and, therefore, is important in evaluating the remedial approach. The literature generally indicates that physical processes such as sorption, diffusion, and back-diffusion do not affect the isotopic ratios in chlorinated ethenes. This conclusion, however, is based only on the behavior of the stable carbon isotopes in the chlorinated ethenes. My study (1) confirmed that the above-mentioned processes have a small, but measurable, effect on stable chlorine isotopes and (2) indicated that these processes have a significant effect on stable hydrogen isotopes in chlorinated ethenes. Therefore, compound specific hydrogen isotope analysis in chlorinated ethenes is a potentially- Here is a link (https://www.battelle.org/ If you have additional questions about this presentation, please contact our office at 248-932-0228 or in Canada at 519-979-7300. For more information on addressing complex soil and groundwater issues, contact Dr. Michael Sklash, P. Eng. (mailto:msklash@ End
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