Oxygen isotope corrections for online δ34S analysis
Rapid Communications in Mass Spectrometry
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Abstract
Elemental analyzers have been successfully coupled to stable-isotope-ratio mass spectrometers for online measurements of the δ34S isotopic composition of plants, animals and soils. We found that the online technology for automated δ34S isotopic determinations did not yield reproducible oxygen isotopic compositions in the SO2 produced, and as a result calculated δ34S values were often 1–3‰ too high versus their correct values, particularly for plant and animal samples with high C/S ratio. Here we provide empirical and analytical methods for correcting the S isotope values for oxygen isotope variations, and further detail a new SO2-SiO2 buffering method that minimizes detrimental oxygen isotope variations in SO2.
Suggested Citation
Fry, B., Silva, S.R., Kendall, C., and Anderson, R., 2002, Oxygen isotope corrections for online δ34S analysis: Rapid Communications in Mass Spectrometry, v. 16, no. 9, p. 854-858, https://doi.org/10.1002/rcm.651.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Oxygen isotope corrections for online δ34S analysis |
| Series title | Rapid Communications in Mass Spectrometry |
| DOI | 10.1002/rcm.651 |
| Volume | 16 |
| Issue | 9 |
| Publication Date | March 20, 2002 |
| Year Published | 2002 |
| Language | English |
| Publisher | Wiley |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Rapid Communications in Mass Spectrometry |
| First page | 854 |
| Last page | 858 |