《1.10-structuralandisotopicanalysisoforganicmatterincarbonaceouschondrites.》

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1、1.10StructuralandIsotopicAnalysisofOrganicMatterinCarbonaceousChondritesI.GilmourTheOpenUniversity,MiltonKeynes,UK1.10.1INTRODUCTION2691.10.2ORGANICMATERIALINCARBONACEOUSCHONDRITES2701.10.3EXTRACTABLEORGANICMATTER2701.10.3.1AbundanceandDistributionofExtractableCompounds2701.10.3.1

2、.1Carboxylicacids2701.10.3.1.2Sulfonicandphosphonicacids2721.10.3.1.3Aminoacids2721.10.3.1.4Aromatichydrocarbons2741.10.3.1.5Heterocycliccompounds2741.10.3.1.6Aliphatichydrocarbons2751.10.3.1.7Aminesandamides2751.10.3.1.8Alcohols,aldehydes,ketones,andsugar-relatedcompounds2761.10.

3、3.2Stable-isotopicInvestigationsofClassesofOrganicCompounds2761.10.3.3Compound-specificIsotopicStudies2771.10.3.3.1Carbon2771.10.3.3.2Nitrogen2801.10.3.3.3Hydrogen2801.10.3.3.4Sulfur2801.10.4MACROMOLECULARMATERIAL2801.10.4.1StructuralStudiesUsingPyrolysisandChemicalDegradation2801.

4、10.4.2NMRandElectronSpinResonanceStudies2811.10.4.3Stable-isotopicStudies2821.10.5INSITUEXAMINATIONOFMETEORITICORGANICMATTER2841.10.6ENVIRONMENTSOFFORMATION285REFERENCES2871.10.1INTRODUCTIONorganicmoleculesthataretheproductofancientchemicalevolution.UnderstandingthesourcesofThemos

5、tancientorganicmoleculesavailableorganicmoleculesinmeteoritesandthechemicalforstudyinthelaboratoryarethosecarriedtoEarthprocessesthatledtotheirformationhasbeenbyinfallingcarbonaceouschondritemeteorites.theprimaryresearchgoal.Circumstellarspace,Alltheclassesofcompoundsnormallyconsi

6、deredthesolarnebulae,andasteroidalmeteoriteparenttobeofbiologicaloriginarerepresentedinbodieshaveallbeensuggestedasenvironmentscarbonaceousmeteoritesand,asidefromsomewhereorganicmattermayhavebeenformed.terrestrialcontamination;itissafetoassumethatDeterminationoftheprovenanceofmete

7、oritictheseorganicspecieswereproducedbynonbiolo-organicmatterrequiresdetailedstructuralandgicalmethodsofsynthesis.Ineffect,carbonaceousisotopicinformation,andthefalloftheMurchisonchondritesareanaturallaboratorycontainingCM2chondritein1969enabledthefirstsystematic269270Structuraland

8、IsotopicAnalysisofOrganicMatteror