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      Guidelines and recommended terms for expression of stable-isotope-ratio and gas-ratio measurement results.

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      Rapid communications in mass spectrometry : RCM
      Wiley

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          Abstract

          To minimize confusion in the expression of measurement results of stable isotope and gas-ratio measurements, recommendations based on publications of the Commission on Isotopic Abundances and Atomic Weights of the International Union of Pure and Applied Chemistry (IUPAC) are presented. Whenever feasible, entries are consistent with the Système International d'Unités, the SI (known in English as the International System of Units), and the third edition of the International Vocabulary of Basic and General Terms in Metrology (VIM, 3rd edition). The recommendations presented herein are approved by the Commission on Isotopic Abundances and Atomic Weights and are designed to clarify expression of quantities related to measurement of isotope and gas ratios to ensure that quantity equations instead of numerical value equations are used for quantity definitions. Examples of column headings consistent with quantity calculus (also called the algebra of quantities) and examples of various deprecated usages connected with the terms recommended are presented.

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          Author and article information

          Journal
          Rapid Commun Mass Spectrom
          Rapid communications in mass spectrometry : RCM
          Wiley
          1097-0231
          0951-4198
          Sep 15 2011
          : 25
          : 17
          Affiliations
          [1 ] US Geological Survey, 431 National Center, Reston, VA 20192, USA. tbcoplen@usgs.gov
          Article
          10.1002/rcm.5129
          21910288
          a4f7b170-76d1-47cc-b95e-4ce8439b25ef
          Published in 2011 by John Wiley & Sons, Ltd.
          History

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