In situ wet chemistry experiment on mars using the sample analysis at mars (sam) instrument: " opportunistic derivatization " to investigate organics in a martian mudstone

Abstract : This opportunistic derivatization experiment represents a successful demonstration of SAM capabilities. Newly optimized parameters, including a hot-trap to minimize MTBSTFA column overloading, multiple temperatures cuts, and a split column configuration, led to a successful derivatization on Mars using the residual MTBSTFA in the sample cup region of the instrument. Several MTBSTFA reaction products were generated during reactions with the Cumberland mudstone sample at elevated temperatures, as well as non-derivatized organic molecules, including chloromethane and 2- propenenitrile of likely martian origin. We are continuing the analysis of this interesting data set to identify derivatization products that could shed additional light on the chemical nature of the organic matter present in the Cumberland mudstone. This experiment is also a stepping stone for the future full- cup derivatization, currently in preparation [2].
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https://hal.archives-ouvertes.fr/hal-01815581
Contributor : Arnaud Buch <>
Submitted on : Thursday, June 14, 2018 - 12:00:13 PM
Last modification on : Tuesday, August 6, 2019 - 11:38:50 AM
Long-term archiving on : Monday, September 17, 2018 - 12:20:44 PM

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Caroline Freissinet, D. Glavin, A. Buch, Cyril Szopa, S. Kashyap, et al.. In situ wet chemistry experiment on mars using the sample analysis at mars (sam) instrument: " opportunistic derivatization " to investigate organics in a martian mudstone. 48th LPSC Lunar and Planetary Science Conference, Mar 2017, The Woodlands (Texas), United States. ⟨hal-01815581⟩

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