Behavior of stable isotopes of dissolved oxygen,dissolved inorganic carbon and nitrate in groundwater at a former wood treatment facility containing hydrocarbon contamination |
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| Authors: | Stephen R. Parker Christopher H. Gammons M. Garrett Smith Simon R. Poulson |
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| Affiliation: | 1. Department of Chemistry and Geochemistry, Montana Tech of The University of Montana, 1300 W. Park St., Butte, MT 59701, USA;2. Department of Geological Engineering, Montana Tech of The University of Montana, 1300 W. Park St., Butte, MT 59701, USA;3. Department of Geological Sciences and Engineering, University of Nevada-Reno, 1664 N. Virginia St., Reno, NV 89557-0138, USA |
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| Abstract: | The speciation and mobility of a variety of chemical species in groundwater are strongly influenced by redox and pH conditions. Dissolved O2 (DO) and dissolved inorganic C (DIC) concentrations are significant controls of these conditions, respectively. It is not always clear what the major processes are that influence changes in the concentration of DO and DIC across a groundwater flowpath. The combined use of the stable isotope compositions of DO (δ18O–DO) and DIC (δ13C–DIC) has the potential to help investigators discriminate between sources and sinks of DO and DIC in groundwater systems. |
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