Isotope-abundance variations and atomic weights of selected elements: 2016 (IUPAC Technical Report)

Pure and Applied Chemistry
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Abstract

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. Herein and at the URL http://dx.doi.org/10.5066/F7GF0RN2, we provide isotopic abundances, isotope-delta values, and atomic weights for each of the upper and lower bounds of these materials and compounds.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Isotope-abundance variations and atomic weights of selected elements: 2016 (IUPAC Technical Report)
Series title Pure and Applied Chemistry
DOI 10.1515/pac-2016-0302
Volume 88
Issue 12
Year Published 2016
Language English
Publisher De Gruyter
Contributing office(s) National Research Program - Eastern Branch
Description 22 p.
First page 1203
Last page 1224