Mathematics – Logic
Scientific paper
Apr 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981gecoa..45..563s&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 45, Apr. 1981, p. 563-569.
Mathematics
Logic
34
Carbonaceous Meteorites, Gas Chromatography, Heterocyclic Compounds, Mass Spectroscopy, Meteoritic Composition, Nitrogen Compounds, Adenines, Chemical Reactions, Guanines, Murray Meteorite, Orgueil Meteorite, Purines, Uracil, Xanthines, Uracil, Ammonia, Solar Nebula, Origin, Formation, Syntheses, Meteorites, Nitrogen, Murchison Meteorite, Murray Meteorite, Orgueil Meteorite, Carbonaceous Chondrites, Chromatography, Spectrometry, Purines, Adenine, Guanine, S-Triazines, Hypoxanthine, Xanthine, Samples, Meteor
Scientific paper
Samples of the Murchison, Murray, and Orgueil carbonaceous meteorites were analyzed for nitrogen-heterocyclic compounds using gas chromatography, cation and anion exclusion liquid chromatography, and mass spectrometry. The H2O and HCOOH extracts, as well as the 3M-HCl hydrolyzate of the Allende sample were taken through all stages of analysis. Concentrations ranging from 114-655 ppb of the purines adenine, guanine, hypoxanthine, and xanthine were found to be present in acid extracts. All four biologically significant purines, as well as the pyrimidine uracil have been identified in meteorites. It was concluded that the suite of N-heterocyclic compounds identified in meteorites do not permit a clear distinction between mechanisms of synthesis such as the Fischer-Tropsch type, and other candidates.
Schwartz Alan W.
Stoks Peter G.
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