Abstract Stable isotope ratios are reported in the literature in terms of a deviation from an international standard (δ‐values). The referencing procedures, however, differ from instrument to instrument and are not consistent between measurement facilities. This paper reviews an attempt to unify the strategy for referencing isotopic measurements. In particular, emphasis is given to the importance of identical treatment of sample and reference material (‘IT principle’), which should guide all isotope ratio determinations and evaluations. The implementation of the principle in our laboratory, the monitoring of our measurement quality, the status of the international scales and reference materials and necessary correction procedures are discussed. Copyright © 2001 John Wiley &amp; Sons, Ltd.

Roland A. Werner

Willi A. Brand

Rapid Communications in Mass Spectrometry

RAPID COMMUNICATIONS IN MASS SPECTROMETRY 是一本期刊，其目的是快速发表关于气相离子科学各个方面的原始研究成果和想法；它涵盖了所有相关的科学学科。论文长度没有正式限制（“快速”不是“简短”的同义词），但论文的长度应与所报告结果的重要性和复杂性相称。贡献可能是理论上的或实际的；他们可能涉及方法、技术和应用，或结果的解释；它们可能涵盖直接依赖于对气态离子进行的测量或与此类测量相关的任何科学领域。

Rapid Communications in Mass Spectrometry is a journal aimed at the rapid publication of original research findings and ideas in all aspects of gas-phase ion science. It encompasses all relevant scientific disciplines. There is no formal limit on the length of papers ("rapid" does not equate to "short"), but the length should be commensurate with the significance and complexity of the reported results. Contributions may be theoretical or practical; they may involve methods, techniques, and applications, or interpretations of results. They may cover any scientific field that directly relies on measurements of gas-phase ions or is related to such measurements.

《Rapid Communications in Mass Spectrometry》是一本旨在快速发表气相离子科学各个方面的原创研究成果和想法的期刊。它涵盖所有相关的科学学科。论文长度没有正式限制（“快速”并不等同于“简短”），但应与所报告结果的重要性和复杂性相称。贡献可以是理论性的或实践性的，可能涉及方法、技术和应用，或结果的解释。这些贡献可能直接依赖于气态离子的测量，或与此类测量相关的任何科学领域。

Rapid Comm Mass Spectrometry

Referencing strategies and techniques in stable isotope ratio analysis

An attempt to unify the strategy for referencing isotopic measurements and emphasis is given to the importance of identical treatment of sample and reference material ('IT principle'), which should guide all isotope ratio determinations and evaluations.

Category	Quartile
化学	3
化学, 生化研究方法	4
化学, 分析化学	4
化学, 光谱学	4

Referencing strategies and techniques in stable isotope ratio analysis

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