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

Craig A. Johnson·Craig A. Stricker·Cayce A. Gulbransen·Matthew P. Emmons
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Abstract

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 13 C/ 12 C, 15 N/ 14 N, and 34 S/ 32 S 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 13 C/ 12 C and 15 N/ 14 N than is used for 34 S/ 32 S to accommodate differences in reagents, catalysts, and instrument settings.

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Craig A. Johnson, Craig A. Stricker, Cayce A. Gulbransen, Matthew P. Emmons. 2018-02-14. Determination of δ13C, δ15N, or δ34S by isotope-ratio-monitoring mass spectrometry using an elemental analyzer. https://doi.org/10.3133/tm5d4

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