Contribution to the Chemistry of Plasma-Activated Water

Plasma-activated water (PAW) was prepared by exposure to nonthermal plasma produced by a positive dc corona discharge in a transient spark regime. The activation of water was performed in atmosphere of various surrounding gases (air, nitrogen, carbon dioxide, and argon). This PAW retains its biologi...

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Bibliographic Details
Published in:Plasma physics reports 2018-01, Vol.44 (1), p.125-136
Main Authors: Julák, J., Hujacová, A., Scholtz, V., Khun, J., Holada, K.
Format: Article
Language:English
Subjects:
ARGON
Atomic
Biological activity
BIOLOGICAL EFFECTS
CARBON DIOXIDE
CELL CULTURES
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
CORONA DISCHARGES
HYDROGEN PEROXIDE
Hydrogen storage
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
Low-Temperature Plasma
Molecular
NITROUS ACID
Optical and Plasma Physics
Physics
Physics and Astronomy
PLASMA
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Summary:Plasma-activated water (PAW) was prepared by exposure to nonthermal plasma produced by a positive dc corona discharge in a transient spark regime. The activation of water was performed in atmosphere of various surrounding gases (air, nitrogen, carbon dioxide, and argon). This PAW retains its biological activity, measured on the mouse neuroblastoma cells culture, even after storage for more than one year. The highest hydrogen peroxide content was found for PAWs prepared in the atmospheres of argon or carbon dioxide, whereas the PAWs prepared in air and nitrogen exhibited lower hydrogen peroxide content. The acidity of PAWs mediated by nitric and nitrous acid formation displayed an opposite trend. It is concluded that the long-lasting biological effect of PAW is mediated by hydrogen peroxide in acid milieu only, whereas other possible active components decompose rapidly.
ISSN:1063-780X
1562-6938
DOI:10.1134/S1063780X18010075