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A 'mass-anomalous' vapor-pressure isotope effect for SF_6

Eiler, John and Hofmann, Amy and Cartigny, Pierre (2010) A 'mass-anomalous' vapor-pressure isotope effect for SF_6. Geochimica et Cosmochimica Acta, 74 (12). A262. ISSN 0016-7037.

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Large mass-anomalous isotope fractionations of O and S are commonly attributed to photochemical reactions. It is unclear whether more subtle mass-anomalous fractionations of O and S can arise from exchange equilibria or other nonphotochemical reactions. Statistical thermodynamic models of a simple harmonic oscillator may [1] or may not [2] predict mass-anomalous equilibrium fractionations of light elements. Experimental devolatilization of carbonate [3] and sulfate [4] reveal mass-anomalous net fractionations of O and S, respectively, but have unconstrained reaction mechanisms and may reflect mixing and/or distillation rather than novel chemical isotope effects.

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Additional Information:© 2010 Published by Elsevier Ltd.
Record Number:CaltechAUTHORS:20130731-093754975
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Official Citation:Goldschmidt Abstracts 2010 – E, Geochimica et Cosmochimica Acta, Volume 74, Issue 12, Supplement, June 2010, Pages A257-A275, ISSN 0016-7037,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:39670
Deposited By: Tony Diaz
Deposited On:19 Aug 2013 19:09
Last Modified:19 Aug 2013 19:09

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