Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 30, issue 15
Articles | Volume 30, issue 15
https://doi.org/10.5194/hess-30-5005-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-30-5005-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 30, issue 15
Technical note
 | 
10 Aug 2026
Technical note |  | 10 Aug 2026

Technical note: Water vapor sampling for stable isotope analysis: systematic testing of sampling conditions and development of a robust protocol

Alberto Iraheta, Elise Malsch-Fröhlich, Malkin Gerchow, and Matthias Beyer

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Short summary
We present a simple and practical method for sampling water vapor for stable isotope analysis. Tests conducted under various conditions demonstrate that using 250-mL glass bottles, a flow rate of 100 to 125 milliliters per minute, and storage for up to 24 h at a temperature of 20 to 25 °C yields the most stable results. The method is cost-effective, non-destructive, and suitable for remote locations.
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