Characterization of aromaticity in analogues of titan's atmospheric aerosols with two-step laser desorption ionization mass spectrometry
| العنوان: | Characterization of aromaticity in analogues of titan's atmospheric aerosols with two-step laser desorption ionization mass spectrometry |
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| المؤلفون: | Yves Bénilan, Martin Schwell, Nathalie Carrasco, Cyril Szopa, Ahmed Mahjoub, Guy Cernogora, Marie-Claire Gazeau |
| المساهمون: | Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA (UMR_7583)), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut Universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), IMPEC - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Creteil Paris 12, European Research Council (ERC), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), PLANETO - LATMOS, European Project: 636829,H2020,ERC-2014-STG,PRIMCHEM(2015) |
| المصدر: | Planetary and Space Science Planetary and Space Science, Elsevier, 2016, 131, pp.1-13. ⟨10.1016/j.pss.2016.05.003⟩ Planetary and Space Science, 2016, 131, pp.1-13. ⟨10.1016/j.pss.2016.05.003⟩ |
| بيانات النشر: | Elsevier BV, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | L2DI-MS, 010504 meteorology & atmospheric sciences, Infrared, [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], Analytical chemistry, FOS: Physical sciences, Mass spectrometry, 01 natural sciences, symbols.namesake, Ionization, 0103 physical sciences, Capacitively coupled plasma, Atmosphere of Titan, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences, Earth and Planetary Astrophysics (astro-ph.EP), Aerosols, [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, Chemistry, Astronomy and Astrophysics, Aromaticity, Tholin, Aromatics, 13. Climate action, Space and Planetary Science, symbols, Titan's atmosphere, Titan (rocket family), Astrophysics - Earth and Planetary Astrophysics |
| الوصف: | International audience; The role of polycyclic aromatic hydrocarbons (PAH) and Nitrogen containing PAH (PANH) as intermediates of aerosol production in the atmosphere of Titan has been a subject of controversy for a long time. An analysis of the atmospheric emission band observed by the Visible and Infrared Mapping Spectrometer (VIMS) at 3.28 µm suggests the presence of neutral polycyclic aromatic species in the upper atmosphere of Titan. These molecules are seen as the counter part of negative and positive aromatics ions suspected by the Plasma Spectrometer onboard the Cassini spacecraft, but the low resolution of the instrument hinders any molecular speciation.In this work we investigate the specific aromatic content of Titan's atmospheric aerosols through laboratory simulations. We report here the selective detection of aromatic compounds in tholins, Titan's aerosol analogues, produced with a capacitively coupled plasma in a N2:CH4 95:5 gas mixture. For this purpose, Two-Step Laser Desorption Ionization Time-of-Flight Mass Spectrometry (L2DI-TOF-MS) technique is used to analyze the so produced analogues. This analytical technique is based on the ionization of molecules by Resonance Enhanced Multi-Photon Ionization (REMPI) using a λ=248 nm wavelength laser which is selective for aromatic species. This allows for the selective identification of compounds having at least one aromatic ring. Our experiments show that tholins contain a trace amount of small PAHs with one to three aromatic rings. Nitrogen containing PAHs (PANHs) are also detected as constituents of tholins. Molecules relevant to astrobiology are detected as is the case of the substituted DNA base adenine. |
| تدمد: | 0032-0633 |
| DOI: | 10.1016/j.pss.2016.05.003 |
| DOI: | 10.1016/j.pss.2016.05.003⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba0bcdc730efba94556e0420c1eb8c5a https://doi.org/10.1016/j.pss.2016.05.003 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....ba0bcdc730efba94556e0420c1eb8c5a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00320633 |
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| DOI: | 10.1016/j.pss.2016.05.003 |