Chemical footprint of the solvent soluble extraterrestrial organic matter occluded in Sołtmany ordinary chondrite

• Autorzy: Schmitt-Kopplin P. , Harir M. , Kanawati B. , Tziozis D. , Hertkorn N. , Gabelica Z.
• Języki publikacji: EN

Abstrakty

EN

By characterizing organic molecules of extra-terrestrial origin included in the Sołtmany meteorite, we also present the first results of the non-targeted chemical analysis of the methanol soluble organic matter present in an L6 ordinary chondrite. The structural characterization by means of ultrahigh resolution Fourier transform ion cyclotron mass spectrometry (FT-ICR-MS) with electrospray ionization (ESI) in negative and positive modes demonstrated an unexpected and astonishing chemical diversity with several thousand mass peaks that could be converted into C, H, N, O, S, and P elemental compositions. Molecular signatures were typically those of considerably oxygenated CHO and CHOS molecular series of primarily aliphatic character. 1H nuclear magnetic resonance (NMR) spectroscopy confirmed the prevalent existence of pure and functionalized aliphatic spin systems of intermediate chain length (C3-4 units), oxygenated aliphatics and a considerable diversity of oxygenated aromatics in the proton-based abundance ratio near 24 : 2 : 1. Although only residual organic matter allegedly survives in highly thermally altered L6 chondrites, the physical protection of organic matter in microcavities and traps between mineral surfaces might have supported and governed the chemistry with an apparent recalcitrance of extraterrestrial organic matter (EOM). Future studies of the organic matter in ordinary chondrites and its composition and structure in various regimes of (e.g.) temperature, radiation, pressure, and water content could shed light on these meteorites’ formation and evolution.

Słowa kluczowe

EN

ordinary chondrite; extraterrestrial organic matter; carbon; nitrogen; sulphur; meteorite; Sołtmany; nuclear magnetic; resonance spectroscopy (NMR); Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS)

• Wydawca: Polish Meteorite Society ; Wrocław University of Science and Technology
• Czasopismo: Meteorites
• Rocznik: 2012
• Tom: Vol. 2, No. 1-2
• Strony: 79--92
• Opis fizyczny: rys., tab.

Twórcy

autor

Schmitt-Kopplin P.

• Helmholtz-Zentrum Muenchen, German Research Center for Environmental Health, Analytical BioGeoChemistry, Ingolstaedter Landstrasse 1, D-85764 Neuherberg, Germany
• Chair of Analytical Food Chemistry, Technische Universitat Munchen, D-85354 Freising-Weihenstephan, Germany

autor

Harir M.

• Helmholtz-Zentrum Muenchen, German Research Center for Environmental Health, Analytical BioGeoChemistry, Ingolstaedter Landstrasse 1, D-85764 Neuherberg, Germany

autor

Kanawati B.

• Helmholtz-Zentrum Muenchen, German Research Center for Environmental Health, Analytical BioGeoChemistry, Ingolstaedter Landstrasse 1, D-85764 Neuherberg, Germany

autor

Tziozis D.

• Helmholtz-Zentrum Muenchen, German Research Center for Environmental Health, Analytical BioGeoChemistry, Ingolstaedter Landstrasse 1, D-85764 Neuherberg, Germany

autor

Hertkorn N.

• Helmholtz-Zentrum Muenchen, German Research Center for Environmental Health, Analytical BioGeoChemistry, Ingolstaedter Landstrasse 1, D-85764 Neuherberg, Germany

autor

Gabelica Z.

• Universite de Haute Alsace, ENSCMu, Lab. GSEC, 3, Rue A. Werner, F-68093 Mulhouse Cedex, France