Stable isotope investigations of chlorinated aliphatic hydrocarbons.

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Stable isotope ratio measurements for carbon (C) and chlorine (Cl) can be used to elucidate the processes affecting transformation and transportation of chlorinated aliphatic hydrocarbons (CAHs) in the environment. Methods recently developed in our laboratory for isotopic analysis of CAHs have been applied to laboratory measurements of the kinetic isotope effects associated with aerobic degradation of dichloromethane (DCM) and with both anaerobic and aerobic cometabolic degradation of trichlomethene (TCE) in batch and column microbial cultures. These experimental determinations of fractionation factors are crucial for understanding the behavior of CAHs in complex natural systems, where the extent of biotransformation can be ... continued below

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7 p.

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Abrajano, T.; Heraty, L. J.; Holt, B. D.; Huang, L. & Sturchio, N. C. June 1, 1999.

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Description

Stable isotope ratio measurements for carbon (C) and chlorine (Cl) can be used to elucidate the processes affecting transformation and transportation of chlorinated aliphatic hydrocarbons (CAHs) in the environment. Methods recently developed in our laboratory for isotopic analysis of CAHs have been applied to laboratory measurements of the kinetic isotope effects associated with aerobic degradation of dichloromethane (DCM) and with both anaerobic and aerobic cometabolic degradation of trichlomethene (TCE) in batch and column microbial cultures. These experimental determinations of fractionation factors are crucial for understanding the behavior of CAHs in complex natural systems, where the extent of biotransformation can be masked by dispersion and volatilization. We have also performed laboratory investigations of kinetic isotope effects accompanying evaporation of CAHs, as well as field investigations of natural attenuation and in situ remediation of CAHs in a number of contaminated shallow aquifers at sites operated by the federal government and the private sector.

Physical Description

7 p.

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OSTI as DE00011823

Medium: P; Size: 7 pages

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  • The Second International Symposium on Integrated Technical Approaches to Site Characterization, Chicago, IL (US), 06/07/1999--06/09/1999

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  • Report No.: ANL/ER/CP-99091
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 11823
  • Archival Resource Key: ark:/67531/metadc622575

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  • June 1, 1999

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  • June 16, 2015, 7:43 a.m.

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  • April 11, 2017, 3:45 p.m.

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Abrajano, T.; Heraty, L. J.; Holt, B. D.; Huang, L. & Sturchio, N. C. Stable isotope investigations of chlorinated aliphatic hydrocarbons., article, June 1, 1999; Illinois. (digital.library.unt.edu/ark:/67531/metadc622575/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.