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Sulphur isotope data consistency improved

Author

Listed:
  • Tyler B. Coplen

    (US Geological Survey)

  • H. Roy Krouse

    (University of Calgary)

Abstract

The standard used for reporting relative sulphur isotope-abundance data has, historically, been troilite (FeS) derived from the Cañon Diablo meteorite, CDT. However, the isotopic inhomogeneity of this material — the variability in its sulphur-34/sulphur-32 isotope ratio is at least 0.4‰ — greatly exceeds the achievable analytical uncertainty of 0.05‰ (ref. 1). Accordingly, the International Union of Pure and Applied Chemistry (IUPAC) has recommended the setting up of a VCDT scale, which is expected to improve agreement between laboratories in measuring this ratio, δ34S.

Suggested Citation

  • Tyler B. Coplen & H. Roy Krouse, 1998. "Sulphur isotope data consistency improved," Nature, Nature, vol. 392(6671), pages 32-32, March.
    • Handle: RePEc:nat:nature:v:392:y:1998:i:6671:d:10.1038_32080
    DOI: 10.1038/32080
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