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Perchlorate on Mars - Overview and ImplicationsPerchlorate was first detected on Mars by the Wet Chemistry Laboratory (WCL) instrument on the Phoenix lander at a concentration of ~0.5 wt% in northern plains soils. Since that initial detection, perchlorate (and likely chlorate) have been detected on Mars by both surface and orbital instruments. Perchlorate (ClO4-) is an oxidized chlorine compound and salts of perchlorate are kinetically stable (though very reactive at high temperature), very soluble, deliquescent, and have low eutectic temperature (which decreases the temperature for stable liquids on Mars). Chlorate (ClO3-) salts are similar, though they are less kinetically stable than perchlorates. Because many of the analytical signatures of perchlorate and chlorate are similar to the instruments we have used on Mars, we cannot always determine which species is present, so we will use the more generic term “oxychlorine” when referring to perchlorate and/or chlorate.
Document ID
20190028297
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Archer, P. D. (Jacobs Engineering Group Houston, TX, United States)
Ming, D. W. (NASA Johnson Space Center Houston, TX, United States)
Sutter, B. (Jacobs Engineering Group Houston, TX, United States)
Hogancamp, J. V. (Jacobs Engineering Group Houston, TX, United States)
Morris, R. V. (NASA Johnson Space Center Houston, TX, United States)
Clark, B.C. (Space Science Institute (SSI) Boulder, CO, United States)
Mahaffy, P.H. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Navarro-González, R. (Universidad Nacional Autonoma de Mexico Coyoacan, Mexico)
McKay, C.P. (NASA Ames Research Center Moffett Field, CA, United States)
Gough, R.V. (Colorado Univ. Boulder, CO, United States)
Fairen, A.G. (Centro de Astrobiología (CAB-CSIC-INTA) Madrid, Spain)
Date Acquired
July 29, 2019
Publication Date
July 22, 2019
Subject Category
Lunar And Planetary Science And Exploration
Report/Patent Number
JSC-E-DAA-TN70050
Meeting Information
Meeting: International Conference on Mars
Location: Pasadena, CA
Country: United States
Start Date: July 22, 2019
End Date: July 25, 2019
Sponsors: California Institute of Technology
Funding Number(s)
CONTRACT_GRANT: NNJ13HA01C
Distribution Limits
Public
Copyright
Public Use Permitted.
Technical Review
Single Expert

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