Table of Contents
Life, Volume 9, Issue 2 (June 2019) – 23 articles
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Cover Story (view full-size image) Carbonaceous chondrites are considered as primitive meteorites due their relatively high carbon [...] Read more. Carbonaceous chondrites are considered as primitive meteorites due their relatively high carbon content. For these reasons, the study of these objects is of major interest in the field of the origin of life, and the Murchison meteorite (CM2) is one of the most investigated carbonaceous chondrites. This study reports the non-targeted analysis of Murchison organic soluble matter by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), with complementary atmospheric pressure photoionization (APPI) and electrospray ionization (ESI) sources. Negative-ion ESI FT-ICR MS was more appropriate for the detection of sulfur-containing species, whereas in positive-ion mode, new organomagnesium compounds and a significant number of nitrogen species were assigned. Positive-ion mode APPI FT-ICR MS ensured the ionization of new low-polarity to nonpolar species, such as polyaromatic hydrocarbons. View this paper.