Organic solids produced by electrical discharge in reducing atmospheres: Tholin molecular analysis |
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| Authors: | BN Khare Carl Sagan John E Zumberge Deborah S Sklarew Bartholomew Nagy |
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| Institution: | Laboratory for Planetary Studies, Cornell University, Ithaca, New York 14853, USA;Laboratory of Organic Geochemistry, Department of Geosciences, The University of Arizona, Tucson, Arizona 85721, USA |
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| Abstract: | The complex dark brown solid of a class called tholins, produced on passage of an electrical discharge through a roughly equimolar mixture of methane and ammonia with 2.6% water vapor, is analyzed by vacuum pyrolysis followed by gas chromatography and mass spectrometry. Pyrolyzates include a wide range of aliphatic and aromatic nitriles, alkanes, aromatic hydrocarbons, pyrrole, and pyridine. This tholin is remarkably stable to 950°C. It and its degradation products are candidate constituents of planetary aerosols in the outer solar system and of the grains in the interstellar medium. |
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