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.
Citation Information
| 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 |
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Craig A Johnson, Ph.D.
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Physical ScientistEmailPhone