Articles | Volume 18, issue 15
https://doi.org/10.5194/amt-18-3691-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-18-3691-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
08 Aug 2025
Research article |
| 08 Aug 2025
| 08 Aug 2025
Determination of pressure baseline corrections for clumped-isotope signals with complex peak shapes
Stephan Räss
CORRESPONDING AUTHOR
Climate and Environmental Physics, University of Bern, 3012 Bern, Switzerland
Oeschger Centre for Climate Change Research, University of Bern, 3012 Bern, Switzerland
Peter Nyfeler
Climate and Environmental Physics, University of Bern, 3012 Bern, Switzerland
Oeschger Centre for Climate Change Research, University of Bern, 3012 Bern, Switzerland
Paul Wheeler
Elementar UK Ltd., Isoprime House, Earl Road, Cheadle Hulme, Stockport, SK8 6PT, United Kingdom
Will Price
Elementar UK Ltd., Isoprime House, Earl Road, Cheadle Hulme, Stockport, SK8 6PT, United Kingdom
Markus Christian Leuenberger
Climate and Environmental Physics, University of Bern, 3012 Bern, Switzerland
Oeschger Centre for Climate Change Research, University of Bern, 3012 Bern, Switzerland
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Short summary
Clumped-isotope signals obtained through gas source mass spectrometry are typically small and require pressure baseline corrections. While such corrections have been developed for square-shaped peaks, we present an approach for correcting peaks with complex shapes. Our method is demonstrated using oxygen clumped isotopes measured in pure oxygen, where the peak tops are linearly increasing and/or negatively curved.
Clumped-isotope signals obtained through gas source mass spectrometry are typically small and...
