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Review of Footnotes and Annotations to the 1949–2013 Tables of Standard Atomic Weights and Tables of Isotopic Compositions of the Elements (IUPAC Technical Report)

Published/Copyright: December 16, 2016
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Chemistry International
From the journal Chemistry International Volume 38 Issue 6

Tyler B. Coplen and Norman E. Holden

Pure and Applied Chemistry, 2016

Volume 88, Issue 7, pp. 689- 699

The Commission on Isotopic Abundances and Atomic Weights uses annotations given in footnotes that are an integral part of the Tables of Standard Atomic Weights to alert users to the possibilities of quite extraordinary occurrences, as well as sources with abnormal atomic-weight values outside an otherwise acceptable range. The basic need for footnotes to the Standard Atomic Weights Table and equivalent annotations to the Table of Isotopic Compositions of the Elements arises from the need to provide users with information that is relevant to one or more elements, but that cannot be provided using numerical data in columns. Any desire to increase additional information conveyed by annotations to these Tables is tempered by the need to preserve a compact format and a style that can alert users, who would not be inclined to consult either the last full element-by-element review or the full text of a current Standard Atomic Weights of the Elements report. Since 1989, the footnotes of the Tables of Standard Atomic Weights and the annotations in column 5 of the Table of Isotopic Compositions of the Elements have been harmonized by the use of three lowercase footnotes, “g”, “m”, and “r”, that signify geologically exceptionally specimens (“g”), modified isotopic compositions in material subjected to undisclosed or inadvertent isotopic fractionation (“m”), and the range in isotopic composition of normal terrestrial material prevents more precise atomic-weight value being given (“r”). As some elements are assigned intervals for their standard atomic-weight values (applies to 12 elements since 2009), footnotes “g” and “r” are no longer needed for these elements.

http://dx.doi.org/10.1515/pac-2016-0203

Online erschienen: 2016-12-16
Erschienen im Druck: 2016-12-1

©2016 by Walter de Gruyter Berlin/Boston

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https://doi.org/10.1515/ci-2016-0625

Articles in the same Issue

  1. Masthead - Full issue pdf
  2. Contents
  3. Vice-President’s Column
  4. IUPAC— Holding the International Chemistry Family Together
  5. Stamps International
  6. Reaching Out for the Sun
  7. Features
  8. IChO-48—An Extraordinary Olympiad of Chemistry
  9. SAICM Science Sector and IUPAC Activities
  10. The Solar Army
  11. IUPAC Wire
  12. Chemistry International Goes Seasonal
  13. Future of the Chemical Sciences
  14. IUPAC 2017 Distinguished Women in Chemistry or Chemical Engineering—Call for Nominations
  15. 2017 IUPAC-Solvay International Award For Young Chemists
  16. IUPAC100 Logo Competition
  17. UNESCO/PhosAgro/IUPAC Green Chemistry for Life Program
  18. Hanwha Total IUPAC Young Scientist Award 2016
  19. DSM Materials Sciences Award 2016 Goes to Professor Steven P. Armes
  20. WANTED: A Home for an Orphaned Chemical Database
  21. Project Place
  22. Identifying International Chemical Identifier (InChI) Enhancements—QR Codes and Industry Applications
  23. Categorizing Chalcogen, Pnictogen, and Tetrel Bonds, and Other Interactions Involving Groups 14-16 Elements
  24. Standardization of Electrical Energy Per Order (EEO) Reporting for UV/H2O2 Reactors
  25. Isotopes Matter
  26. Materials on the Nanoscale—Uniform Description System Version 2.0
  27. Making an imPACt
  28. How to Name New Chemical Elements (IUPAC Recommendations 2016)
  29. Vocabulary of Concepts and Terms in Chemometrics (IUPAC Recommendations 2016)
  30. Glossary of Terms Used in Extraction (IUPAC Recommendations 2016)
  31. Extraction for Analytical Scale Sample Preparation (IUPAC Technical Report)
  32. Review of Footnotes and Annotations to the 1949–2013 Tables of Standard Atomic Weights and Tables of Isotopic Compositions of the Elements (IUPAC Technical Report)
  33. Guidelines for Measurement of Luminescence Spectra and Quantum Yields of Inorganic and Organometallic Compounds in Solution and Solid State (IUPAC Technical Report)
  34. Bookworm
  35. Storing Energy, with Special Reference to Renewable Energy Sources
  36. Chemistry Beyond Chlorine
  37. POLYCHAR 23—World Forum on Advanced Materials
  38. Macromolecular Complexes Part I and II
  39. Polymer-Solvent Complexes and Intercalates POLYSOLVAT-10
  40. A Draft Framework for Understanding SDG Interactions
  41. Up for Discussion
  42. Is it possible to extend the Cahn-Ingold-Prelog priority rules to supramolecular structures and coordination compounds using lone pairs?
  43. Preliminary Property Design for Ionic Solids and Liquids
  44. Conference Call
  45. New Chemistries for Phytomedicines and Crop Protection Chemicals
  46. Science: How Close to Open?
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  50. Phosphorus Chemistry
  51. Where 2B & Y
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  53. Macro- and Supramolecular Architectures and Materials
  54. Colloquium Spectroscopicum Internationale
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