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Determination of δ13C, δ15N, or δ34S by isotope-ratio-monitoring mass spectrometry using an elemental analyzer

February 26, 2018

This report describes procedures used in the Geology, Geophysics, and Geochemistry Science Center of the U.S. Geological Survey in Denver, Colorado, to determine the stable-isotope ratios 13C/12C, 15N/14N, and 34S/32S in solid materials. The procedures use elemental analyzers connected directly to gas-source isotope-ratio mass spectrometers. A different elemental–analyzer–mass-spectrometer system is used for 13C/12C and 15N/14N than is used for 34S/32S to accommodate differences in reagents, catalysts, and instrument settings.

Publication Year 2018
Title Determination of δ13C, δ15N, or δ34S by isotope-ratio-monitoring mass spectrometry using an elemental analyzer
DOI 10.3133/tm5D4
Authors Craig A. Johnson, Craig A. Stricker, Cayce A. Gulbransen, Matthew P. Emmons
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Techniques and Methods
Series Number 5-D4
Index ID tm5D4
Record Source USGS Publications Warehouse
USGS Organization Geology, Geophysics, and Geochemistry Science Center