Formation of prebiochemical compounds in models of the primitive Earth's atmosphere

Details Formation of prebiochemical compounds in models of the primitive Earth's atmosphere Formation of prebiochemical compounds in models of the primitive Earth's atmosphere

Jan 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975orli....6...83t&link_type=abstract

Origins of Life, Volume 6, Issue 1-2, pp. 83-90

Computer Science

20

Scientific paper

In order to understand the formation of organic compounds in the primitive atmosphere, the first steps of evolution in models of the primitive atmosphere were investigated. Mixtures containing C-H-N elements were subjected to a low pressure silent electric discharge for several seconds, and the resulting effluents were analysed mainly by gas chromatography, infrared spectrometry and chemical analysis. The formation of hydrocarbons (i.e. ethylene, acetylene, methylacetylene) and of nitrogen containing compounds (i.e. hydrogen cyanide, cyanogen, saturated nitriles, acrylonitrile, cyanoacetylene) is reported. The influence of the initial mixture composition on the amount of compounds formed was systematically studied. The nature of the nitrogen source (N2 or NH3) in the primitive atmosphere has a great influence on the amount and on the very nature of the synthesized products. It is shown that important precursors such as cyanogen and cyanoacetylene are formed only in very rich N2 mediums. There results show the important role played by the nature of the primitive atmosphere in the determination of the chemical evolution pathways.

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