Detection of Perchlorate and the Soluble Chemistry of Martian Soil at the Phoenix Lander Site

@article{Hecht2009DetectionOP,
  title={Detection of Perchlorate and the Soluble Chemistry of Martian Soil at the Phoenix Lander Site},
  author={M. Hecht and S. Kounaves and R. Quinn and S. West and S. M. Young and D. Ming and D. Catling and B. Clark and W. Boynton and J. Hoffman and L. Deflores and K. Gospodinova and J. Kapit and P. H. Smith},
  journal={Science},
  year={2009},
  volume={325},
  pages={64 - 67}
}
Phoenix Ascending The Phoenix mission landed on Mars in March 2008 with the goal of studying the ice-rich soil of the planet's northern arctic region. Phoenix included a robotic arm, with a camera attached to it, with the capacity to excavate through the soil to the ice layer beneath it, scoop up soil and water ice samples, and deliver them to a combination of other instruments—including a wet chemistry lab and a high-temperature oven combined with a mass spectrometer—for chemical and… Expand
H2O at the Phoenix Landing Site
TLDR
The analysis of the data from the Phoenix mission revealed an alkaline environment, in contrast to that found by the Mars Exploration Rovers, indicating that many different environments have existed on Mars. Expand
Evidence for Calcium Carbonate at the Mars Phoenix Landing Site
TLDR
Results suggest that the soil at the Phoenix landing site must have suffered alteration through the action of liquid water in geologically the recent past, and an alkaline environment was revealed, in contrast to that found by the Mars Exploration Rovers, indicating that many different environments have existed on Mars. Expand
Identification of the perchlorate parent salts at the Phoenix Mars landing site and possible implications
Abstract In 2008 the Phoenix Mars lander Wet Chemistry Laboratory (WCL) measured 0.6 wt% of perchlorate ( ClO 4 - ) in the martian soil. A crucial question remaining unanswered is the identity of theExpand
Reanalysis of the Viking results suggests perchlorate and organics at midlatitudes on Mars
[1] The most comprehensive search for organics in the Martian soil was performed by the Viking Landers. Martian soil was subjected to a thermal volatilization process to vaporize and break organicExpand
MECHANISTIC STUDIES ON THE RADIOLYTIC DECOMPOSITION OF PERCHLORATES ON THE MARTIAN SURFACE
Perchlorates—inorganic compounds carrying the perchlorate ion (ClO4 - )—were discovered at the north polar landing site of the Phoenix spacecraft and at the southern equatorial landing site of theExpand
Reevaluation of Perchlorate in Gale Crater Rocks Suggests Geologically Recent Perchlorate Addition
Perchlorate (ClO₄⁻) was discovered in Martian soil by the Phoenix lander, with important implications for potential Martian biology, photochemistry, aqueous chemistry, and the chlorine cycle on Mars.Expand
Evidence of martian perchlorate, chlorate, and nitrate in Mars meteorite EETA79001: Implications for oxidants and organics
Abstract The results from the Viking mission in the mid 1970s provided evidence that the martian surface contained oxidants responsible for destroying organic compounds. In 2008 the Phoenix WetExpand
Concentrated perchlorate at the Mars Phoenix landing site: Evidence for thin film liquid water on Mars
[1] NASA's Phoenix mission, which landed on the northern plains of Mars in 2008, returned evidence of the perchlorate anion distributed evenly throughout the soil column at the landing site. Here, weExpand
Soluble sulfate in the martian soil at the Phoenix landing site
[1] Sulfur has been detected by X-ray spectroscopy in martian soils at the Viking, Pathfinder, Opportunity and Spirit landing sites. Sulfates have been identified by OMEGA and CRISM in VallesExpand
Comparison of the Phoenix Mars Lander WCL soil analyses with Antarctic Dry Valley soils, Mars meteorite EETA79001 sawdust, and a Mars simulant
Abstract The results of the Mars Phoenix Lander’s Wet Chemistry Laboratory (WCL) for the analyses of the soluble ionic species present in the soil at the northern polar plains of Mars are compared toExpand
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TLDR
The analysis of the data from the Phoenix mission revealed an alkaline environment, in contrast to that found by the Mars Exploration Rovers, indicating that many different environments have existed on Mars. Expand
Evidence for Calcium Carbonate at the Mars Phoenix Landing Site
TLDR
Results suggest that the soil at the Phoenix landing site must have suffered alteration through the action of liquid water in geologically the recent past, and an alkaline environment was revealed, in contrast to that found by the Mars Exploration Rovers, indicating that many different environments have existed on Mars. Expand
The MECA Wet Chemistry Laboratory on the 2007 Phoenix Mars Scout Lander
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TLDR
It is found that the delta 18O values of man-made perchlorate were at -18.4+/-1.4%, which confirms an early speculation that the oxidation of volatile chlorine by 03 and the formation of HClO4 can be a sink (albeit a minor one) for atmospheric chlorine. Expand
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TLDR
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