Search for Organic Material on Mars with the Thermochemolysis Derivatization Technique Onboard the MOMA Experiment - Laboratoire interuniversitaire des systèmes atmosphériques Accéder directement au contenu
Communication Dans Un Congrès Année : 2016

Search for Organic Material on Mars with the Thermochemolysis Derivatization Technique Onboard the MOMA Experiment

Cyril Szopa
Caroline Freissinet
Paul R. Mahaffy
  • Fonction : Auteur
  • PersonId : 924866

Résumé

After the SAM experiment onboard the Curiosity rover, the Mars Organic Molecule Analyzer (MOMA) experiment onboard the future ExoMars mission will be the continuation of the search for the organic composition of the Mars surface. MOMA will have the advantage of extracting the sample from as deep as 2 meters below the martian surface to minimize effects of radiation and oxidation on organic materials. To analyse the wide range of organic compounds (volatile and non volatils compounds) penten-tially present in the martian soil MOMA includes two operational modes: UV laser desorption / ionization ion trap mass spectrometry (LDI-ITMS) and pyrolysis gas chromatography ion trap mass spectrometry (pyr-GC-ITMS). In order to analyse refractory organic compounds and chirality samples which undergo GC-ITMS analysis may be submitted to a derivatization process, consisting in the reaction of the sample components with specific reactants (MTBSTFA [1], DMF-DMA [2] or TMAH [3]). To prove the feasibility of the derivatization within the MOMA conditions we have adapated our laboratory procedure to the space conditions (temperature, time, pressure and size) in order to decrease our detection limits and increase the range of the organic compounds that MOMA will be able to detect. Here, we only discuss the optimization of the thermochemiolysis technique.
Fichier principal
Vignette du fichier
2159.pdf (331.76 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

insu-01285239 , version 1 (09-03-2016)

Identifiants

  • HAL Id : insu-01285239 , version 1

Citer

M. Morisson, A. Buch, Cyril Szopa, Daniel Glavin, Caroline Freissinet, et al.. Search for Organic Material on Mars with the Thermochemolysis Derivatization Technique Onboard the MOMA Experiment. 47th Lunar and Planetary Science Conference, Mar 2016, The Woodlands, Texas, United States. pp.2159. ⟨insu-01285239⟩
191 Consultations
65 Téléchargements

Partager

Gmail Facebook X LinkedIn More