Inorganic
Chemistry Division
Commission on Isotopic
Abundances and Atomic Weights
Explanatory Glossary of Terms Used in Expression
of Relative Isotope Ratios and Gas Ratios
To minimize confusion in the expression of measurements
of isotope and gas ratios, a glossary based on recommendation by the
Commission on Isotopic Abundances and Atomic Weights of the IUPAC is
presented. Entries in the glossary are consistent with the SI system
of units or with recommendations of the Commission. The recommendations
presented herein are designed to clarify expression of quantities related
to measurement of isotope and gas ratios by ensuring that quantity equations
and not numerical-value equations are used to define quantities. Examples
of column headings consistent with SI recommendations and examples of
various deprecated usages connected with the terms recommended are presented
herein.
> Download full text of the Provisional Recommendations (pdf
file - 693KB)
Comments by 31 May 2008
Dr. Tyler B. Coplen
U.S. Geological Survey
431 National Center
12201 Sunrise Valley Drive
Reston, VA 20192, USA
TEL: +1 703-648-5862
FAX: +1 703-648-5832
E-MAIL: [email protected]
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