Sulfur and Hydrogen Isotope Anomalies in Meteorite Sulfonic Acids

Details Sulfur and Hydrogen Isotope Anomalies in Meteorite Sulfonic Acids Sulfur and Hydrogen Isotope Anomalies in Meteorite Sulfonic Acids

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997sci...277.1072c&link_type=abstract

Science, vol. Vol. 277, p. 1072

Computer Science

32

Sulfur Isotopes, Hydrogen Isotopes, Anomalies, Sulfonic Acid, Carbon Compounds, Vapor Phases, Molecular Clouds, Hydrogen, Isotope Ratios, Murchison Meteorite, Fractionation, Interstellar Matter, Irradiation

Scientific paper

Intramolecular carbon, hydrogen, and sulfur isotope ratios were measured on a homologous series of organic sulfonic acids discovered in the Murchison meteorite. Mass-independent sulfur isotope fractionations were observed along with high deuterium/hydrogen ratios. The deuterium enrichments indicate formation of the hydrocarbon portion of these compounds in a low-temperature environment that is consistent with that of interstellar clouds. Sulfur-33 enrichments observed in methanesulfonic acid could have resulted from gas-phase ultraviolet irradiation of a precursor, carbon disulfide. The source of the sulfonic acid precursors may have been the reactive interstellar molecule carbon monosulfide.

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