Chromatographic analysis of a cold plasma jet generated by an electrode microwave discharge in argon flow, interacting with atmospheric air

Abstract

Application of gas chromatography in analysis of a cold plasma jet generated by an atmospheric pressure microwave discharge in argon flow was considered. Previously developed 2.45-GHz-plasmatron with the external 6-rod-electrode plasma torch was used as a microwave plasma source. The analysis of gaseous samples showed that CO concentration increases by 5-6 times and new gaseous products appear – H2 and CH4 as a result of plasma-gas interaction. The production of CO, H2 and O2 occurs in the processes of dissociation of CO2 and water vapor in the nonequilibrium plasma through the vibrationally excited states.

Interelectrode microwave glow discharge in atmospheric-pressure argon flow

“…We used a waveguide-type microwave plasmatron with an external electrode plasma torch as payload [21][22][23].…”

“…These works were aimed at cold plasma jet characterization and treatment effect investigation for biomedical applications; however, they did not investigate the properties of the microwave discharge itself. The development and study of such a wide outlet plasma source were also presented in our recent works [21][22][23].…”

“…Over the past two decades, increased attention has been paid to development and investigation of microwave plasma sources for atmospheric-pressure cold plasma jet generation [18][19][20][21][22][23]. Currently, the most widely investigated cold plasma jet is so-called 'plasma plume' which based on a pin-electrode discharge inside a narrow dielectric tube [17,[24][25][26][27][28][29][30].…”