Carbon, hydrogen and nitrogen isotopes in solvent-extractable organic matter from carbonaceous chondrites

Details Carbon, hydrogen and nitrogen isotopes in solvent-extractable organic matter from carbonaceous chondrites Carbon, hydrogen and nitrogen isotopes in solvent-extractable organic matter from carbonaceous chondrites

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982gecoa..46...97b&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 46, Jan. 1982, p. 97-103.

Computer Science

26

Carbon Isotopes, Carbonaceous Chondrites, Hydrogen Isotopes, Meteoritic Composition, Nitrogen Isotopes, Organic Compounds, Solvent Extraction, Carbon Tetrachloride, Methyl Alcohol, Meteorites, Carbon, Hydrogen, Nitrogen, Organic Compounds, Data, Origin, Techniques, Carbonaceous Chondrites, Murray Meteorite, Demineralization, Murchison Meteorite, Orgueil Meteorite, Renazzo Meteorite, Isotopic Ratios, Samples, Meteorite, Minerals, Ci1 Meteorites, Cm2 Meteorites, Procedure, Analysis, Carbon Tetrachloride, Etha

Scientific paper

CCl4 and CH3OH solvent extractions were performed on the Murray, Murchison, Orgueil and Renazzo carbonaceous chondrites. Delta-D values of +300-+500% are found in the case of the CH3OH-soluble organic matter. The combined C, H and N isotope data makes it unlikely that the CH3OH-soluble components are derivable from, or simply related to, the insoluble organic polymer found in the same meteorites. A relation between the event that formed hydrous minerals in CI1 and CM2 meteorites and the introduction of water- and methanol-soluble organic compounds is suggested. Organic matter soluble in CCl4 has no N, and delta-C-13 values are lower than for CH3OH-soluble phases. It is concluded that there either are large isotopic fractionations for carbon and hydrogen between different soluble organic phases, or the less polar components are partially of terrestrial origin.

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