Specificity of detection methods of nitrites and ozone in aqueous solutions activated by air plasma

0497967 - ÚFP 2019 RIV DE eng J - Journal Article
Tarabová, B. - Lukeš, Petr - Janda, M. - Hensel, K. - Šikurová, L. - Machala, Z.
Specificity of detection methods of nitrites and ozone in aqueous solutions activated by air plasma.
Plasma Processes and Polymers. Roč. 15, č. 6 (2018), č. článku 1800030. ISSN 1612-8850. E-ISSN 1612-8869
R&D Projects: GA MŠMT(CZ) LD14080
EU Projects: European Commission TD1208
Grant - others:Agentúra pre podporu vedy a výskum(SK) 1/0419/18; Slovak Research and Development Agency(SK) APVV–0134–10
Institutional support: RVO:61389021
Keywords : DC discharges * nitrites * ozone * plasma activated water * UV-VIS spectroscopy
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 3.173, year: 2018
https://onlinelibrary.wiley.com/doi/abs/10.1002/ppap.201870014

Air transient spark (TS) discharge generates cold plasma, which is a rich source of reactive oxygen and nitrogen species (RONS). The gaseous products both in ambient air and air humidified by water electrospray (ES) are nitrogen oxides (NO and NO2). The rotational and vibrational temperatures determined by optical emission spectroscopy (OES) are lower with water ES through the discharge than in ambient air, which reduces the formation of NOx. The investigation of the specificity of Griess colorimetric assay for the detection of long‐lived nitrites in plasma activated solutions confirms its accuracy by comparison with ion chromatography (IC) and excludes possible interferences with hydrogen peroxide by using the enzyme catalase. Examination of the specificity of the Indigo blue assay for ozone detection shows strong interferences with the peroxynitrite chemistry. Phenol as the chemical probe confirms that the TS air discharge produces no aqueous ozone.
Permanent Link: http://hdl.handle.net/11104/0290406