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Evidence of CFC degradation in groundwater under pyrite-oxidizing conditions

Dates

Year
2007

Citation

Sebol, L A, Robertson, W D, Busenberg, E, Plummer, L N, Ryan, M C, and Schiff, S L, 2007, Evidence of CFC degradation in groundwater under pyrite-oxidizing conditions: Journal of Hydrology, v. 347, iss. 1–2, p. 1-12.

Summary

Summary A detailed local-scale monitoring network was used to assess CFC distribution in an unconfined sand aquifer in southwestern Ontario where the zone of 1–5-year-old groundwater was known with certainty because of prior use of a bromide tracer. Groundwater ⩽5 years old was confined to an aerobic zone at ⩽5 m depth and had CFC concentrations consistent with modern atmospheric mixing ratios at recharge temperatures of 7–11 °C, as was observed in the 3-m thick vadose zone at the site. At depths below 6 m, the groundwater became progressively more reducing, however, with a denitrifying horizon at 6–7 m depth, and a Mn and Fe reducing zone below 7 m depth. In the anaerobic zone, 3H/3He ratios indicated that groundwater-age continued [...]

Contacts

Communities

  • USGS National Research Program

Tags

Provenance

Added to ScienceBase on Fri Apr 19 09:23:46 MDT 2013 by processing file <b>Kinetics and Thermodynamics of Chemical Evolution in Ground-Water.xml</b> in item <a href="https://www.sciencebase.gov/catalog/item/504216bae4b04b508bfd339f">https://www.sciencebase.gov/catalog/item/504216bae4b04b508bfd339f</a>

Additional Information

Identifiers

Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1016/j.jhydrol.2007.08.009

Citation Extension

journalJournal of Hydrology
parts
typePages
value1-12
typeVolume
value347
typeIssue
value1–2
citationTypeJournal Article

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