Gradual and stepwise pyrolyses of insoluble organic matter from the Murchison meteorite revealing chemical structure and isotopic distribution

2011 ◽  
Vol 75 (22) ◽  
pp. 7063-7080 ◽  
Author(s):  
Fumiaki Okumura ◽  
Koichi Mimura
Keyword(s):  
Organic Matter ◽  
Chemical Structure ◽  
Isotopic Distribution ◽  
Murchison Meteorite ◽  
Insoluble Organic Matter

Selective release of D and13C from insoluble organic matter of the Murchison meteorite by impact shock

2007 ◽  
Vol 42 (3) ◽  
pp. 347-355 ◽  
Author(s):  
Koichi Mimura ◽  
Michioki Okamoto ◽  
Kenichiro Sugitani ◽  
Shigemasa Hashimoto
Keyword(s):  
Organic Matter ◽  
Murchison Meteorite ◽  
Insoluble Organic Matter ◽  
Impact Shock

scholarly journals Speciation of organosulfur compounds in carbonaceous chondrites

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Alexander Zherebker ◽  
Yury Kostyukevich ◽  
Dmitry S. Volkov ◽  
Ratibor G. Chumakov ◽  
Lukas Friederici ◽  
...  
Keyword(s):  
Organic Matter ◽  
Analytical Techniques ◽  
Ion Cyclotron Resonance ◽  
Organosulfur Compounds ◽  
Low Oxygen ◽  
Fticr Ms ◽  
Insoluble Organic Matter ◽  
Composition And Structure ◽  
Extractable Fraction ◽  
The Individual

AbstractDespite broad application of different analytical techniques for studies on organic matter of chondrite meteorites, information about composition and structure of individual compounds is still very limited due to extreme molecular diversity of extraterrestrial organic matter. Here we present the first application of isotopic exchange assisted Fourier transform ion cyclotron resonance mass spectrometry (FTICR MS) for analysis of alkali extractable fraction of insoluble organic matter (IOM) of the Murchison and Allende meteorites. This allowed us to determine the individual S-containing ions with different types of sulfur atoms in IOM. Thiols, thiophenes, sulfoxides, sulfonyls and sulfonates were identified in both samples but with different proportions, which contribution corroborated with the hydrothermal and thermal history of the meteorites. The results were supported by XPS and thermogravimetric analysis coupled to FTICR MS. The latter was applied for the first time for analysis of chondritic IOM. To emphasize the peculiar extraterrestrial origin of IOM we have compared it with coal kerogen, which is characterized by the comparable complexity of molecular composition but its aromatic nature and low oxygen content can be ascribed almost exclusively to degradation of biomacromolecules.

scholarly journals Chromophoric Dissolved Organic Matter (CDOM): chemical structure and PARAFAC analysis

2018 ◽  
Author(s):  
Rossana Del Vecchio ◽  
Neil V Blough ◽  
Carmen Cartisano ◽  
Marla Bianca ◽  
Tara M Schendorf ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Chemical Structure ◽  
Chromophoric Dissolved Organic Matter

scholarly journals Synthesis of 13C-enriched amino acids with 13C-depleted insoluble organic matter in a formose-type reaction in the early solar system

2021 ◽  
Vol 7 (18) ◽  
pp. eabd3575
Author(s):  
Yoshihiro Furukawa ◽  
Yoshinari Iwasa ◽  
Yoshito Chikaraishi
Keyword(s):  
Aqueous Solution ◽  
Organic Matter ◽  
Solar System ◽  
Acid Synthesis ◽  
Soluble Organic Matter ◽  
Early Solar System ◽  
Cold Region ◽  
Amino Acid Synthesis ◽  
Type Reaction ◽  
Insoluble Organic Matter

Solvent-soluble organic matter (SOM) in meteorites, which includes life’s building molecules, is suspected to originate from the cold region of the early solar system, on the basis of 13C enrichment in the molecules. Here, we demonstrate that the isotopic characteristics are reproducible in amino acid synthesis associated with a formose-type reaction in a heated aqueous solution. Both thermochemically driven formose-type reaction and photochemically driven formose-type reaction likely occurred in asteroids and ice-dust grains in the early solar system. Thus, the present results suggest that the formation of 13C-enriched SOM was not specific to the cold outer protosolar disk or the molecular cloud but occurred more widely in the early solar system.

Natural 13C Abundance and Chemical Structure of Organic Matter of Haplic Chernozem under Contrasting Land Uses

2021 ◽  
Vol 54 (6) ◽  
pp. 852-864
Author(s):  
Z. S. Artemyeva ◽  
N. N. Danchenko ◽  
E. P. Zazovskaya ◽  
Yu. G. Kolyagin ◽  
N. P. Kirillova ◽  
...  
Keyword(s):  
Organic Matter ◽  
Chemical Structure ◽  
Land Uses ◽  
13C Abundance
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