Changes of 2H and 18O abundances in water treated with non‐thermal atmospheric pressure plasma jet. Issue 10 (5th April 2017)

• Record Type: Journal Article
• Authors: Mance, Diana; Geilmann, Heike; Brand, Willi A.; Kewitz, Thorben; Kersten, Holger
• Is Part Of: Plasma processes and polymers. Volume 14:Issue 10(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-04-05
• Subjects: plasma jet -- plasma‐liquid interactions -- plasma treatment -- stable isotopes; Plasma polymerization -- Periodicals; Plasma-enhanced chemical vapor deposition -- Periodicals; Plasma chemistry -- Periodicals
• DOI: 10.1002/ppap.201600239
• Languages: English
• ISSNs: 1612-8850

Abstract

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 2 H and 18 O, 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. Abstract : Heavy isotope enrichment of water treated with non‐thermal atmospheric plasma jet is investigated by cavity ring‐down spectroscopy. The combined effect of ventilation, bubbling and heating of water treated with plasma jet causes evaporation under non‐equilibrium conditions and thus 2 H and 18 O enrichment of residual water.