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Transport and Fate of Nitrate in a Glacial Outwash Aquifer in Relation to Ground Water Age, Land Use Practices, and Redox Processes

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Year
2001

Citation

Puckett, Larry J., and Cowdery, Timothy K., 2001, Transport and Fate of Nitrate in a Glacial Outwash Aquifer in Relation to Ground Water Age, Land Use Practices, and Redox Processes: J. Environ. Qual., v. 31, no. 3, p. 782-796.

Summary

A combination of ground water modeling, chemical and dissolved gas analyses, and chlorofluorocarbon age dating of water was used to determine the relation between changes in agricultural practices, and NO- 3 concentrations in ground water of a glacial outwash aquifer in west-central Minnesota. The results revealed a redox zonation throughout the saturated zone with oxygen reduction occurring near the water table, NO- 3 reduction immediately below it, and then a large zone of ferric iron reduction, with a small area of sulfate (SO2- 4) reduction and methanogenesis (CH4) near the end of the transect. Analytical and NETPATH modeling results supported the hypothesis that organic carbon served as the electron donor for the redox reactions. [...]

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  • National and Regional Climate Adaptation Science Centers
  • Northeast CASC

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Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.2134/jeq2002.7820

Citation Extension

citationTypeJournal Article
journalJ. Environ. Qual.
parts
typePages
value782-796
typeVolume
value31
typeNumber
value3

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