Standard atomic weights of the elements 2021 (IUPAC Technical Report)
Thomas Prohaska, et al.
Pure and Applied Chemistry, 2022, AOP 4 May 2022
https://doi.org/10.1515/pac-2019-0603
Following the reviews of atomic-weight determinations and other cognate data in 2015, 2017, 2019 and 2021 by the IUPAC Commission on Isotopic Abundances and Atomic Weights (CIAAW), an update of the Table of Standard Atomic Weights (TSAW) has been released 4 May 2022. The CIAAW has changed the values of the standard atomic weights of five elements based on recent determinations of terrestrial isotopic abundances: Ar (argon), Hf (hafnium), Ir (iridium), Pb (lead), and Yb (ytterbium). The standard atomic weight of argon and lead have changed to an interval to reflect that the natural variation in isotopic composition exceeds the measurement uncertainty in a specific substance. The standard atomic weights and/or the uncertainties of fourteen elements have been changed based on the Atomic Mass Evaluations 2016 and 2020 accomplished under the auspices of the International Union of Pure and Applied Physics (IUPAP): Al (aluminium), Au (gold), Co (cobalt), F (fluorine), Ho (holmium), Mn (manganese), Nb (niobium), Pa (protactinium), Pr (praseodymium), Rh (rhodium), Sc (scandium), Tb (terbium), Tm (thulium), and Y (yttrium).
See "TSAW —a lifelong challenge or simply an unsolved mystery?" on page 18.
©2022 IUPAC & De Gruyter. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. For more information, please visit: http://creativecommons.org/licenses/by-nc-nd/4.0/
Articles in the same Issue
- Masthead - Full issue pdf
- Treasurer's Column
- Wir schaffen das!
- Features
- The Garden Party at Wiltzangk
- The 2021 IUPAC World Chemistry Leadership Meeting
- Benign by Design
- Not just Good Chemistry
- TSAW—a lifelong challenge or simply an unsolved mystery?
- IUPAC Wire
- Winners of the 2022 IUPAC-Solvay International Award for Young Chemists
- Hanwha-TotalEnergies IUPAC Young Polymer Scientist Award 2022
- 8th Polymer International-IUPAC Award Goes to Zachary Hudson
- 2023 Distinguished Women in Chemistry/Chemical Engineering Award—Call for Nominations
- GWB2023 Sponsorship Opportunities
- Scientific Editor for Pure and Applied Chemistry—Call for Nominations
- IUPAC Centenary Endowment Board—Call for members
- IUPAC Blue Book
- IUPAC Emeritus Fellows
- Project Place
- Terms for Mechanisms of Polymer Growth
- Digital Representation of Units of Measurement
- IUPAC Green Book—Update and More
- Making an imPACt
- Seabed mining and blue growth: exploring the potential of marine mineral deposits as a sustainable source of rare earth elements (MaREEs) (IUPAC Technical Report)
- Standard atomic weights of the elements 2021 (IUPAC Technical Report)
- Terminology and the naming of conjugates based on polymers or other substrates (IUPAC Recommendations 2021)
- Glossary of terms used in physical organic chemistry (IUPAC Recommendations 2021)
- Synthesis design using mass related metrics, environmental metrics, and health metrics
- Bookworm
- Cheminformatics: Data and Standards
- Systematic Nomenclature of Organic, Organometallic and Coordination Chemistry. Chemical-Abstracts Guidelines with IUPAC Recommendations and Many Trivial Names
- Conference Call
- InChI Open Meeting
Articles in the same Issue
- Masthead - Full issue pdf
- Treasurer's Column
- Wir schaffen das!
- Features
- The Garden Party at Wiltzangk
- The 2021 IUPAC World Chemistry Leadership Meeting
- Benign by Design
- Not just Good Chemistry
- TSAW—a lifelong challenge or simply an unsolved mystery?
- IUPAC Wire
- Winners of the 2022 IUPAC-Solvay International Award for Young Chemists
- Hanwha-TotalEnergies IUPAC Young Polymer Scientist Award 2022
- 8th Polymer International-IUPAC Award Goes to Zachary Hudson
- 2023 Distinguished Women in Chemistry/Chemical Engineering Award—Call for Nominations
- GWB2023 Sponsorship Opportunities
- Scientific Editor for Pure and Applied Chemistry—Call for Nominations
- IUPAC Centenary Endowment Board—Call for members
- IUPAC Blue Book
- IUPAC Emeritus Fellows
- Project Place
- Terms for Mechanisms of Polymer Growth
- Digital Representation of Units of Measurement
- IUPAC Green Book—Update and More
- Making an imPACt
- Seabed mining and blue growth: exploring the potential of marine mineral deposits as a sustainable source of rare earth elements (MaREEs) (IUPAC Technical Report)
- Standard atomic weights of the elements 2021 (IUPAC Technical Report)
- Terminology and the naming of conjugates based on polymers or other substrates (IUPAC Recommendations 2021)
- Glossary of terms used in physical organic chemistry (IUPAC Recommendations 2021)
- Synthesis design using mass related metrics, environmental metrics, and health metrics
- Bookworm
- Cheminformatics: Data and Standards
- Systematic Nomenclature of Organic, Organometallic and Coordination Chemistry. Chemical-Abstracts Guidelines with IUPAC Recommendations and Many Trivial Names
- Conference Call
- InChI Open Meeting
