Elsevier

Chemical Geology

Volume 199, Issues 1–2, 30 August 2003, Pages 179-182
Chemical Geology

Short communication
A note on intra-elemental isotope effects and the interpretation of non-mass-dependent isotope variations

https://doi.org/10.1016/S0009-2541(03)00076-7Get rights and content

Abstract

Significant deviations from the “normal” intra-elemental isotope fractionation relationship for sulphur isotopes can be caused by isotope exchange by equilibria involving gaseous S2 and H2S. The phenomenon applies to other elements and it is caused by differences in the crossover temperature of isotope exchange reactions for the different (at least three) isotopes of an element.

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Acknowledgements

The paper resulted from a class discussion in GEOSC518 Stable Isotope Geochemistry. The author is indebted to the students of the class: A.O. Driscoll, C.K. Junium, K.E. Nielson, P.J. Polissar, F. Smith, and B. Thomas, who help focus the ideas expressed in this paper. [RR]

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