An investigation of the carbonaceous material in the Orgueil, Murray, Mokoia, and Lance carbonaceous chondritic meteorites

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dc.contributor.advisorOro, John
dc.contributor.committeeMemberWentworth, Wayne E.
dc.contributor.committeeMemberSnider, Philip J.
dc.contributor.committeeMemberZlatkis, Albert
dc.creatorRaia, Joseph Charles
dc.date.accessioned2022-06-22T19:53:49Z
dc.date.available2022-06-22T19:53:49Z
dc.date.issued1966
dc.description.abstractThe Orgueil Murray, Mokoia and Lancd carbonaceous chondritic meteorites were analyzed for their amino acid content employing methods similar to thase used to Isolate amino acids from terrestrial sediments. An automatic ion-exchange chromatographic technique indicated that only the Murray meteorite sample contained ninhydrin positive compounds identified as common protein amino acids. The other meteorites studied contained either no detectable amounts of these type acids or only trace amounts, these being considered to have arisen during the analysis. Available data indicated that the amino acids detected in the Murray were not indigenous to the meteorite sample, but originated from terrestrial contamination acquired since its fall. The bulk of the carbonaceous material in the Orgueil meteorite, which exists as a relatively intractable, insoluble substance, was subjected to analysis by physical and chemical methods. X-ray diffraction and elemental compositional data suggested that the material may be structurally similar to terrestrial carbonaceous materials such as lignitic coals and coaly type kerogens. Oxidative degradation of the meteorite material produced a complex mixture containing components whose identification could not be ascertained. Preliminary paper chromatographic and infrared data however did indicate that compounds possessing carboxylic acid, aromatic, hydroxy aromatic, ester, and ether structures may be present. Soluble aromatic hydroxy compounds were searched for in ether extracts of the Orgueil meteorite using methods which have been used to extract phenolic substances from terrestrial sediments. Sensitive paper chromatographic methods failed to detect any such compounds in the meteorite sample. A possible origin for the insoluble, carbonaceous material was suggested on the basis of data presently available.
dc.description.departmentChemistry, Department of
dc.format.digitalOriginreformatted digital
dc.format.mimetypeapplication/pdf
dc.identifier.other13726715
dc.identifier.urihttps://hdl.handle.net/10657/9894
dc.language.isoen
dc.rightsThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. Section 107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.
dc.titleAn investigation of the carbonaceous material in the Orgueil, Murray, Mokoia, and Lance carbonaceous chondritic meteorites
dc.type.dcmiText
dc.type.genreThesis
thesis.degree.collegeCollege of Arts and Sciences
thesis.degree.departmentChemistry, Department of
thesis.degree.disciplineChemistry
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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