Application of Laser Desorption Mass Spectrometry (LDMS) to Cosmogeochemistry: Direct Analysis of Organic Compounds in Meteorites

摘要: Organic compounds in meteorites are a key to understanding abiotic synthetic reactions, the cosmochemical carbon cycle, and role that these processes might play biogenesis. Although it was established over century ago some contain carbonaceous material which, part, form of organic compounds, their analyses has posed an extreme challenge due limited sample amount available possible contamination chemical modification during storage processing. In general, conventional geochemical approaches require several grams analysis is laborious, often involving series extraction, purification identification steps. The use laser desorption mass spectrometry (LDMS) allows for direct meteorite, which non-destructive from mineralogical standpoint requires only sub-milligram quantities meteorite material. LDMS involves ‘intact’ permitting time-of-flight spectrometer. this work, I have applied method coupled with simple extraction procedures syntheses examine chondrites (Murchison Allende) detection polycyclic aromatic hydrocarbons (PAHs), kerogen-like material, fullerenes (C60 AND C70) fulleranes (C70HX).