Optimization of the TMAH Thermochemolysis Technique for the Detection of Trace Organic Matter on Mars by the SAM and MOMA-Pyr-GC-MS Experiment - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2018

Optimization of the TMAH Thermochemolysis Technique for the Detection of Trace Organic Matter on Mars by the SAM and MOMA-Pyr-GC-MS Experiment

A. Buch
  • Fonction : Auteur
Cyril Szopa
Caroline Freissinet
David Coscia
  • Fonction : Auteur
  • PersonId : 971424

Résumé

Boththe Sample Analysis at Mars (SAM) and Mars Organic Molecule Analyzer (MOMA)instrumentsare able to identify organic material at the Martian surface and subsurface. Both experiments are equipped with pyrolysis-Gas Chromatography-Mass Spectrometry (Pyr-GC-MS)and derivatization reagents (MTBSTFA)that will allowthe analyzerefractory com-pounds,making them more volatile and protecting the labile chemical groups. In order to improve the Pyr-GC-MS analysis, TMAH (tetramethylammonium hydrox-ide) will be used on MOMA and SAM to extract refrac-tory compounds (macromolecules, kerogen, etc.) and protect polar compounds released from the pyrolysis ex-periment.We performed pyrolysis and TMAH-thermochemolysis of a Martian regolith simulant (JSC-Mars-1) to optimizeanalytical parameters, especially the thermochemolysis temperature, to ensure the success of the near future in situthermochemolysis analyses on Mars.
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Dates et versions

hal-01815507 , version 1 (14-06-2018)

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A. Buch, M. Morisson, Cyril Szopa, Maeva Millan, Caroline Freissinet, et al.. Optimization of the TMAH Thermochemolysis Technique for the Detection of Trace Organic Matter on Mars by the SAM and MOMA-Pyr-GC-MS Experiment. 49th LPSC Lunar and Planetary Science Conference 2018, Mar 2018, The Woodlands, United States. pp.LPI Contribution No. 2083, id.1422. ⟨hal-01815507⟩
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