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Isotope-Abundance Variations and Atomic Weights of Selected Elements: 2016 (IUPAC Technical Report)

Published/Copyright: April 25, 2017
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Chemistry International
From the journal Chemistry International Volume 39 Issue 2

Tyler B. Coplen and Yesha Shrestha

Pure and Applied Chemistry, 2016

Volume 88, Issue 12, pp. 1203-1224

There are 63 chemical elements that have two or more isotopes that are used to determine their standard atomic weights. The isotopic abundances and atomic weights of these elements can vary in normal materials due to physical and chemical fractionation processes (not due to radioactive decay). These variations are well known for 12 elements (hydrogen, lithium, boron, carbon, nitrogen, oxygen, magnesium, silicon, sulfur, chlorine, bromine, and thallium), and the standard atomic weight of each of these elements is given by IUPAC as an interval with lower and upper bounds. Graphical plots of selected materials and compounds of each of these elements have been published previously. This report provides isotopic abundances, isotope-delta values, and atomic weights for each of the upper and lower bounds of these materials and compounds.

https://doi.org/10.1515/pac-2016-0302

Online erschienen: 2017-4-25
Erschienen im Druck: 2017-4-25

©2017 by Walter de Gruyter Berlin/Boston

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https://doi.org/10.1515/ci-2017-0220

Articles in the same Issue

  1. Masthead - Full issue pdf
  2. From the Editorial Board
  3. Contents
  4. The First IUPAC World Chemistry Congress with a Latin Flavor
  5. Features
  6. IYCN: A Journey That Has Just Begun
  7. IUPAC Facilitating Chemistry Data Exchange in the Digital Era
  8. Nanomaterials—On the Brink of Revolution? Or the Endless Pursuit of Something Unattainable?
  9. Hero Worship in Words: Imitating the Grand Style of R. B. Woodward
  10. IUPAC Wire
  11. Awardees of the IUPAC 2017 Distinguished Women in Chemistry or Chemical Engineering
  12. Neil Garg is the Recipient of the 2016 Thieme–IUPAC Prize
  13. The Franzosini Award of 2016
  14. A Global Approach to the Gender Gap in Mathematical and Natural Sciences: How to Measure It, How to Reduce It?
  15. New InChI Software Release
  16. Project Place
  17. Database on Molecular Compositions of Natural Organic Matter and Humic Substances as Measured by High Resolution Mass Spectrometry
  18. Integrating Green Chemistry and Socio-Sustainability in Higher Education: Successful Experiences Contributing to Transform Our World
  19. NUTRIAGEING: Combining Chemistry, Cooking, and Agriculture
  20. Safety Training Program
  21. The Silver Book and the NPU Format for Clinical Laboratory Science Reports Regarding Properties, Units, and Symbols
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  30. Terminology of Bioanalytical Methods
  31. Nomenclature and Terminology for Dendrimers with Regular Dendrons and for Hyperbranched Polymers
  32. Definition of the Mole
  33. Terminology of Separation Methods
  34. NOTeS
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  36. Conference Call
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  38. Bioinspired and Biobased Chemistry & Materials
  39. International Carbohydrate Symposium
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  41. Where 2B & Y
  42. Chemistry in a Multidisciplinary, Interdisciplinary World
  43. Trace Elements Analysis of Environmental Samples with X-rays
  44. Ionic Polymerization
  45. Global Challenges and Data-Driven Science
  46. Mark Your Calendar
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