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Calculation of individual isotope equilibrium constants for geochemical reactions

Dates

Year
2004

Citation

Thorstenson, Donald C, and Parkhurst, David L, 2004, Calculation of individual isotope equilibrium constants for geochemical reactions: Geochimica et Cosmochimica Acta, v. 68, iss. 11, p. 2449-2465.

Summary

Theory is derived from the work of Urey (Urey H. C. [1947] The thermodynamic properties of isotopic substances. J. Chem. Soc. 562–581) to calculate equilibrium constants commonly used in geochemical equilibrium and reaction-transport models for reactions of individual isotopic species. Urey showed that equilibrium constants of isotope exchange reactions for molecules that contain two or more atoms of the same element in equivalent positions are related to isotope fractionation factors by α = (Kex)1/n, where n is the number of atoms exchanged. This relation is extended to include species containing multiple isotopes, for example 13C16O18O and 1H2H18O. The equilibrium constants of the isotope exchange reactions can be expressed as ratios [...]

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  • USGS National Research Program

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Added to ScienceBase on Mon Mar 18 14:46:19 MDT 2013 by processing file <b>Former Project Chemical Models of Natural Systems.xml</b> in item <a href="https://www.sciencebase.gov/catalog/item/5140c480e4b06685e5dba6b3">https://www.sciencebase.gov/catalog/item/5140c480e4b06685e5dba6b3</a>

Additional Information

Identifiers

Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1016/j.gca.2003.11.027

Citation Extension

journalGeochimica et Cosmochimica Acta
parts
typePages
value2449-2465
typeVolume
value68
typeIssue
value11
citationTypeJournal Article

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