Feed gas humidity: small concentrations – large effects

Jörn Winter (1, 2) , Kristian Wende (1, 2) , Malte Hammer (1, 2) , Helena Tresp (1, 2) , Sylvain Iseni (1, 2) , Mario Dünnbier (2, 1) , Kai Masur (2, 1) , Klaus-Dieter Weltmann (1) , Stephan Reuter (1, 2)

1 INP - Leibniz Institute for Plasma Science and Technology
2 The center for innovation competence (ZIK) plasmatis

The effect of feed gas humidity was investigated on an atmospheric pressure argon plasma jet, on plasma treated cell growth medium (RPMI) and finally on human skin cells. Already small humidity concentrations below 1000 ppm have a strong influence on the jet’s emission signal, gas and liquid phase H2O2 production as well as on the cell viability. A correlation between H2O2 generated in the liquid and cell viability was obtained.

Mots clés: humidity; atmospheric pressure argon plasma jet; plasma medicine; H2O2; HaCaT; humidity

Domaines: Physique des plasmas [physics.plasm-ph]; Ingénierie biomédicale

Jörn Winter, Kristian Wende, Malte Hammer, Helena Tresp, Sylvain Iseni, et al.. Feed gas humidity: small concentrations – large effects. 21st International Symposium on Plasma Chemistry (ISPC 21st), 2013, Cairns, Australia. pp.295. ⟨hal-02286107⟩