Sulphur isotope data consistency improved

Tyler B. Coplen () and H. Roy Krouse ()
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Tyler B. Coplen: US Geological Survey
H. Roy Krouse: University of Calgary

Nature, 1998, vol. 392, issue 6671, 32-32

Abstract: 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.

Date: 1998
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DOI: 10.1038/32080

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