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Title: Extracting organic matter on Mars: A comparison of methods involving subcritical water, surfactant solutions and organic solvents
Authors: Luong, D.
Court, R. W.
Sephton, M. A.
Sims, Mark R.
Cullen, D. C.
First Published: 21-May-2014
Publisher: Elsevier
Citation: Planetary and Space Science, 2014, 99, pp. 19-27
Abstract: The first step in many life detection protocols on Mars involves attempts to extract or isolate organic matter from its mineral matrix. A number of extraction options are available and include heat and solvent assisted methods. Recent operations on Mars indicate that heating samples can cause the loss or obfuscation of organic signals from target materials, raising the importance of solvent-based systems for future missions. Several solvent types are available (e.g. organic solvents, surfactant based solvents and subcritical water extraction) but a comparison of their efficiencies in Mars relevant materials is missing. We have spiked the well characterised Mars analogue material JSC Mars-1 with a number of representative organic standards. Extraction of the spiked JSC Mars-1 with the three solvent methods provides insights into the relative efficiency of these methods and indicates how they may be used on future Mars missions.
DOI Link: 10.1016/j.pss.2014.05.001
ISSN: 0032-0633
Version: Post-print
Status: Peer-reviewed
Type: Journal Article
Rights: Archived with reference to SHERPA/RoMEO and publisher website. NOTICE: this is the author’s version of a work that was accepted for publication in Planetary and Space Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Planetary and Space Science, Volume 99, September 2014 doi: 10.1016/j.pss.2014.05.001
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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