Possible Calcite and Magnesium Perchlorate Interaction in the Mars Phoenix Thermal and Evolved Gas Analyzer (tega)
نویسندگان
چکیده
THERMAL AND EVOLVED GAS ANALYZER (TEGA). K. M. Cannon, B. Sutter, D. W. Ming, W. V. Boynton and R. C. Quinn, Department of Geological Sciences and Geological Engineering, Queen’s University, Kingston, Ontario, Canada, K7L 3N6 ([email protected]), Jacobs-ESCG, Houston, TX, NASA Johnson Space Center, Houston, TX, Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ. SETI Institute, NASA Ames Research Center, Moffett Field, CA.
منابع مشابه
Thermal and Evolved Gas Analysis of Magnesium Perchlorate: Implications for Perchlorates in Soils at the Mars Phoenix Landing Site
Introduction: Perchlorate salts were discovered in the soils around the Phoenix landing site on the northern plains of Mars [1]. Perchlorate was detected by an ion selective electrode that is part of the MECA Wet Chemistry Laboratory (WCL). The discovery of a mass 32 fragment (likely O2) by the Thermal and Evolved-Gas Analyzer (TEGA) provided additional confirmation of a strong oxidizer in the ...
متن کاملThermal and Evolved Gas Behavior of Calcite under Mars Phoenix Tega
Introduction: The Mars Phoenix Scout Mission with its diverse instrument suite successfully examined several soils on the Northern plains of Mars. The Thermal and Evolved Gas Analyzer (TEGA) was employed to detect organic and inorganic materials by coupling a differential scanning calorimeter (DSC) with a magnetic-sector mass spectrometer (MS). Martian soil was heated up to 1000°C in the DSC ov...
متن کاملThermal and Evolved Gas Analysis of Geologic Samples Containing Organic Materials: Implications for the 2007 Mars Phoenix Scout Mission
Introduction: The Thermal “and” Evolved Gas Analyzer (TEGA) instrument scheduled to fly onboard the 2007 Mars Phoenix Scout Mission will perform differential scanning calorimetry (DSC) and evolved gas analysis (EGA) of soil samples and ice collected from the surface and subsurface at a northern landing site on Mars. We have been developing a sample characterization data library using a laborato...
متن کاملPerchlorate Reducing Bacteria: Evaluating the Potential for Growth Utilizing Nutrient Sources Identified on Mars
Introduction: Perchlorate reducing bacteria may serve as model organisms for potential life forms that could exist on Mars. Due to the high reduction potential of perchlorate it can be utilized in microbial metabolism as an electron acceptor [1]. Perchlorate was discovered to be present in martain surface materials (~0.5% wt.) using the Wet Chemistry Laboratory and the Thermal and Evolved Gas A...
متن کاملModeling aqueous perchlorate chemistries with applications to Mars
NASA’s Phoenix lander identified perchlorate and carbonate salts on Mars. Perchlorates are rare on Earth, and carbonates have largely been ignored on Mars following the discovery by NASA’s Mars Exploration Rovers of acidic precipitated minerals such as jarosite. In light of the Phoenix results, we updated the aqueous thermodynamic model FREZCHEM to include perchlorate chemistry. FREZCHEM models...
متن کامل