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Tables and charts for isotope-abundance variations and atomic weights of selected elements: 2016 (Ver. 1.1, May 2018)

Dates

Publication Date
Revision
2018-05-01
Info Date
2018

Citation

Coplen, T.B., and Shrestha, Y., 2016, Tables and charts for isotope-abundance variations and atomic weights of selected elements: 2016 (Ver. 1.1, May 2018): U.S. Geological Survey data release, https://doi.org/10.5066/F7GF0RN2.

Summary

Twelve chemical elements have intervals for their standard atomic weights, namely hydrogen, lithium, boron, carbon, nitrogen, oxygen, magnesium, silicon, sulfur, chlorine, bromine and thallium. Isotopic abundances, isotope-delta values, and atomic weights for each of the lower and upper bounds of materials and compounds of these 12 elements are tabulated. Version 1.1 is the most current version.

Contacts

Point of Contact :
Tyler B Coplen
Originator :
Tyler B Coplen, Yesha Shrestha
Metadata Contact :
Tyler B Coplen
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
USGS Mission Area :
Water Resources
SDC Data Owner :
National Research Program

Attached Files

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Rev_Tables_&_charts_for_isotope_abundance_var_&_at_wt_of_sel_elements_2016.xml
Original FGDC Metadata

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72.76 KB
Revision History for V1.1.pdf 47.09 KB
Rev_Tables_&_charts_for_isotope_abundance_var_&_at_wt_of_sel_elements_2016.xlsx 1.45 MB

Purpose

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 (International Union of Pure and Applied Chemistry) as an interval with a lower and upper bounds. Graphical plots of selected materials and compounds of each of these elements have been published previously, and herein isotopic abundances, isotope-delta values, and atomic weights for each of the upper and lower bounds of these materials and compounds are provided. Charts showing the variations in selected materials for each element are also provided.

Map

Communities

  • USGS Data Release Products

Tags

Provenance

Data source
Input directly
Revision 1.1 by Tyler Coplen on May 1, 2018. To review the changes that were made, see "Revision History for V1.1.pdf" in the attached files section.

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/F7GF0RN2

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