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Changes of 2H and 18O abundances in water treated with non-thermal atmospheric pressure plasma jet

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Geilmann,  Heike
Service Facility Stable Isotope, Dr. W. A. Brand, Max Planck Institute for Biogeochemistry, Max Planck Society;

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Brand,  Willi A.
Service Facility Stable Isotope, Dr. W. A. Brand, Max Planck Institute for Biogeochemistry, Max Planck Society;

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Citation

Mance, D., Geilmann, H., Brand, W. A., Kewitz, T., & Kersten, H. (2017). Changes of 2H and 18O abundances in water treated with non-thermal atmospheric pressure plasma jet. Plasma Processes and Polymers, 14(10): e1600239. doi:10.1002/ppap.201600239.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002C-EFC6-B
Abstract
We treated water samples with a non-thermal atmospheric pressure plasma jet and pure gas flow. Stable isotope measurements of water samples were performed by cavity ring-down spectroscopy. Both plasma and purged gas treated samples resulted enriched in 2H and 18O, contrary to untreated water. The enrichment is dominantly caused by evaporation under non-equilibrium conditions. The combined effect of ventilation and heating by plasma jet is the most probable reason for higher enrichment with heavier species of plasma treated samples than the ones purged by gas.