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Open AccessArticle

Profiling Murchison Soluble Organic Matter for New Organic Compounds with APPI- and ESI-FT-ICR MS

1
Analytical BioGeoChemistry, Helmholtz Zentrum Muenchen, 85764 Neuherberg, Germany
2
Analytical Food Chemistry, Technische Universität Muenchen, 85354 Freising, German
3
Department of Earth and Planetary Sciences and Research Center for Planetary Trace Organic Compounds, Kyushu University, 8190395 Fukuoka, Japan
*
Authors to whom correspondence should be addressed.
Received: 20 May 2019 / Revised: 4 June 2019 / Accepted: 5 June 2019 / Published: 6 June 2019
(This article belongs to the Special Issue Analytical Chemistry in Astrobiology)
The investigation of the abundant organic matter in primitive meteorite such as carbonaceous chondrites is of major interest in the field of origin of life. In this study, the soluble organic fraction of the Murchison meteorite was analyzed by atmospheric pressure photoionization (APPI) and electrospray ionization (ESI) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), in both detection modes. Such an approach ensured that we obtained an extensive description of the organic matter of the CM2 meteorite. Indeed, while in total close to 16,000 unique features were assigned, only 4% are common to all analyses, illustrating the complementarity of both the detection modes and the ionization sources. ESI FT-ICR MS analysis, in negative-ion mode, ensured to observe specifically CHOS and CHNOS species, whereas the positive-ion mode is more dedicated to the detection of CHNO and CHN species. Moreover, new organomagnesium components were observed in (+) ESI. Eventually, (+) APPI FT-ICR MS analysis was a preferred method for the detection of less polar or nonpolar species such as polycyclic aromatic hydrocarbons but also heteroatom aromatic species composing the organic matter of Murchison. View Full-Text
Keywords: high-resolution mass spectrometry; complementary ionization sources; organic compounds; aromatic compounds; Murchison meteorite high-resolution mass spectrometry; complementary ionization sources; organic compounds; aromatic compounds; Murchison meteorite
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MDPI and ACS Style

Hertzog, J.; Naraoka, H.; Schmitt-Kopplin, P. Profiling Murchison Soluble Organic Matter for New Organic Compounds with APPI- and ESI-FT-ICR MS. Life 2019, 9, 48.

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