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Prebiotic chemistry in neutral/reduced-alkaline gas-liquid interfaces
Centro de Astrobiología (CSIC-INTA), Madrid, Spain.
Centro de Astrobiología (CSIC-INTA), Madrid, Spain.
Centro de Astrobiología (CSIC-INTA), Madrid, Spain.
Centro de Astrobiología (CSIC-INTA), Madrid, Spain.
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2019 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 9, no 1, article id 1916Article in journal (Refereed) Published
Abstract [en]

The conditions for the potential abiotic formation of organic compounds from inorganic precursors have great implications for our understanding of the origin of life on Earth and for its possible detection in other environments of the Solar System. It is known that aerosol-interfaces are effective at enhancing prebiotic chemical reactions, but the roles of salinity and pH have been poorly investigated to date. Here, we experimentally demonstrate the uniqueness of alkaline aerosols as prebiotic reactors that produce an undifferentiated accumulation of a variety of multi-carbon biomolecules resulting from high-energy processes (in our case, electrical discharges). Using simulation experiments, we demonstrate that the detection of important biomolecules in tholins increases when plausible and particular local planetary environmental conditions are simulated. A greater diversity in amino acids, carboxylic acids, N-heterocycles, and ketoacids, such as glyoxylic and pyruvic acid, was identified in tholins synthetized from reduced and neutral atmospheres in the presence of alkaline aqueous aerosols than that from the same atmospheres but using neutral or acidic aqueous aerosols.

Place, publisher, year, edition, pages
Nature Publishing Group, 2019. Vol. 9, no 1, article id 1916
National Category
Aerospace Engineering
Research subject
Atmospheric science
Identifiers
URN: urn:nbn:se:ltu:diva-73002DOI: 10.1038/s41598-018-36579-7PubMedID: 30760732Scopus ID: 2-s2.0-85061491143OAI: oai:DiVA.org:ltu-73002DiVA, id: diva2:1291686
Note

Validerad;2019;Nivå 2;2019-02-26 (svasva)

Available from: 2019-02-26 Created: 2019-02-26 Last updated: 2019-02-26Bibliographically approved

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Zorzano Mier, María-Paz

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