Imperial College London
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ProfessorSamuelKounaves

Faculty of Engineering, Department of Earth Science & Engineering

Visiting Professor
 
 
 
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Contact

 

+44 (0)7763 262 356s.kounaves Website CV

 
 
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Location

 

2.34Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Sutter:2016:10.1017/S1473550416000057,
author = {Sutter, B and Quinn, RC and Archer, PD and Glavin, DP and Glotch, TD and Kounaves, SP and Osterloo, MM and Rampe, EB and Ming, DW},
doi = {10.1017/S1473550416000057},
journal = {International Journal of Astrobiology},
pages = {203--217},
title = {Measurements of Oxychlorine species on Mars},
url = {http://dx.doi.org/10.1017/S1473550416000057},
volume = {16},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Mars landed and orbiter missions have instrumentation capable of detecting oxychlorine phases(e.g. perchlorate, chlorate) on the surface. Perchlorate (0.6 wt%) was first detected by the Wet ChemistryLaboratory in the surface material at the Phoenix Mars Landing site. Subsequent analyses by the ThermalEvolved Gas Analyser aboard the same lander detected an oxygen release (465°C) consistent with thethermal decomposition of perchlorate. Recent thermal analysis by the Mars Science Laboratory’s SampleAnalysis at Mars instrument has also indicated the presence of oxychlorine phases (up to 1.2 wt%) in GaleCrater materials. Despite being at detectable concentrations, the Chemistry and Mineralogy (CheMin) Xraydiffractometer has not detected oxychlorine phases. This suggests that Gale Crater oxychlorine may existas poorly crystalline phases or that perchlorate/chlorate mixtures exist, so that individual oxychlorineconcentrations are below CheMin detection limits (1 wt%). Although not initially designed to detectoxychlorine phases, reinterpretation of Viking Gas Chromatography/Mass Spectrometer data also suggestthat oxychlorine phases are present in the Viking surface materials. Remote near-infrared spectral analysesby the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) instrument indicate that at leastsome martian recurring slope lineae (RSL) have spectral signatures consistent with the presence of hydratedperchlorates or chlorates during the seasons when RSL are most extensive. Despite the thermal emissionspectrometer, Thermal Emission Imaging System, Observatoire pour la Minéralogie, l’Eau, les Glaces etl’Activité and CRISM detection of hundreds of anhydrous chloride (10–25 vol%) deposits, expectedassociated oxychlorine phases (>5–10 vol%) have not been detected. Total Cl and oxychlorine data sets fromthe Phoenix Lander and the Mars Science Laboratory missions could be used to develop oxychlorineversus tota
AU  - Sutter,B
AU  - Quinn,RC
AU  - Archer,PD
AU  - Glavin,DP
AU  - Glotch,TD
AU  - Kounaves,SP
AU  - Osterloo,MM
AU  - Rampe,EB
AU  - Ming,DW
DO  - 10.1017/S1473550416000057
EP  - 217
PY  - 2016///
SN  - 1473-5504
SP  - 203
TI  - Measurements of Oxychlorine species on Mars
T2  - International Journal of Astrobiology
UR  - http://dx.doi.org/10.1017/S1473550416000057
VL  - 16
ER  -
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