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Dating groundwater with trifluoromethyl sulfurpentafluoride (SF5CF3), sulfur hexafluoride (SF6), CF3Cl (CFC-13), and CF2Cl2 (CFC-12)

Dates

Year
2008

Citation

Busenberg, Eurybiades, and Plummer, L Niel, 2008, Dating groundwater with trifluoromethyl sulfurpentafluoride (SF5CF3), sulfur hexafluoride (SF6), CF3Cl (CFC-13), and CF2Cl2 (CFC-12): Water Resources Research, v. 44, iss. 2.

Summary

A new groundwater dating procedure using the transient atmospheric signal of the environmental tracers SF5CF3, CFC-13, SF6, and CFC-12 was developed. The analytical procedure determines concentrations of the four tracers in air and water samples. SF5CF3 and CFC-13 can be used to date groundwaters in some environments where the CFCs and SF6 have previously failed because these new tracers have increasing atmospheric input functions, no known terrigenic source, and are believed to be stable under reducing conditions. SF5CF3 has a dating range from 1970 to modern; the mixing ratio (mole fraction) in North American air has increased from the detection limit of 0.005 parts per trillion (ppt) to the 2006 mole fraction of about 0.16 ppt. [...]

Contacts

Attached Files

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 10.1029/2007WR006150

Citation Extension

citationTypeJournal Article
journalWater Resources Research
parts
typeVolume
value44
typeIssue
value2

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