Atmospheric pressure glow discharge generated in nitrogen-methane gas mixture: PTR-MS analyzes of the exhaust gas

摘要: This paper reports the results of an extensive study with in situ mass spectrometry analysis gaseous phase species produced by atmospheric plasma glow discharge N 2 -CH 4 gas mixtures (with methane concentrations ranging from 1% to 4%). The products are studied using proton-transfer-reaction (PTR-MS). HCN and CH 3 CN identified as main products. Hydrazine, methanimine, methyldiazene, ethylamine, cyclohexadiene, pyrazineacetylene, ethylene, propyne propene minor compounds. All detected compounds their relative abundances determined respect experimental conditions (gas composition applied power). same molecules were observed Cassini-Huygens probe Titan’s atmosphere (which has mixtures). Such, experiments show that formation such complex organics atmospheres containing C, H, like Titan, could be a source prebiotic molecules.