In Situ Analyses of Tholins Using DMF-DMA Derivatization For DraMS Instrument Onboard The Future Dragonfly Mission - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2022

In Situ Analyses of Tholins Using DMF-DMA Derivatization For DraMS Instrument Onboard The Future Dragonfly Mission

Analyses in situ des tholins à l'aide de la dérivatisation DMF-DMA pour l'instrument DraMS à bord de la future mission Dragonfly

Résumé

To prepare for the future mission Dragonfly [1,2], and the in situ analyses of Titan samples with the Dragonfly Mass Spectrometer (DraMS) instrument [3], laboratory sample preparation and analysis with Gas Chromatographic – Mass Spectrometry (GC-MS) has to be developed and optimized. For this astrobiologically focused mission, one of the objectives is the detection and quantification of heavy and complex organics relevant for prebiotic chemistry [2]. For instance, amino acids are one of the targets as they constitute proteins necessary for life [4]. One of the reagents that is carried within DraMS, called dimethylformamide dimethyl acetal (DMF-DMA), will help to volatilize refractory and polar organic molecules in order to be analyzed by GC-MS [5,6]. To prepare the derivatization experiment, we have investigated the analysis of Titan analogs [4,7,8] and the efficiency of the DMF-DMA reagent to derivatize low volatility organics under DraMS-like conditions. DMF-DMA will also be used to preserve the chiral conformation of derivatized organics [5] – separated on a chiral column – to enable the detection of an enantiomeric excess. Enantiomeric excess of amino acids, for example, represents a potential biosignature if found on the surface of Titan [9].
Fichier principal
Vignette du fichier
Abscicon 2022 Tholins derivatization Boulesteix David.pdf (491.38 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04462898 , version 1 (19-02-2024)

Identifiants

Citer

David Boulesteix, Arnaud Buch, Cyril Szopa, Thomas Gautier, Caroline Freissinet, et al.. In Situ Analyses of Tholins Using DMF-DMA Derivatization For DraMS Instrument Onboard The Future Dragonfly Mission. The Astrobiology Science Conference (AbSciCon) 2022, May 2022, Atlanta, United States. pp.id. 204-06. ⟨hal-04462898⟩
26 Consultations
5 Téléchargements

Partager

Gmail Facebook X LinkedIn More