The MECA Wet Chemistry Laboratory on the 2007 Phoenix Mars Scout Lander

@article{Kounaves2009TheMW,
  title={The MECA Wet Chemistry Laboratory on the 2007 Phoenix Mars Scout Lander},
  author={Samuel P. Kounaves and Michael H. Hecht and Steven. West and John Michael Morookian and Suzanne M. M. Young and Richard C. Quinn and Paula J. Grunthaner and Xiaowen Wen and Mark A. Weilert and Casey A. Cable and Anita M. Fisher and Kalina Gospodinova and Jason Kapit and Shannon T. Stroble and Po Chang Hsu and Benton C. Clark and Doug W. Ming and Peter H. Smith},
  journal={Journal of Geophysical Research},
  year={2009},
  volume={114}
}
[1] To analyze and interpret the chemical record, the 2007 Phoenix Mars Lander includes four wet chemistry cells. These Wet Chemistry Laboratories (WCLs), part of the Microscopy, Electrochemistry, and Conductivity Analyzer (MECA) package, each consist of a lower “beaker” containing sensors designed to analyze the chemical properties of the regolith and an upper “actuator assembly” for adding soil, water, reagents, and stirring. The beaker contains an array of sensors and electrodes that include… 
Wet Chemistry experiments on the 2007 Phoenix Mars Scout Lander mission: Data analysis and results
[1] Chemical analyses of three Martian soil samples were performed using the Wet Chemistry Laboratories on the 2007 Phoenix Mars Scout Lander. One soil sample was obtained from the top ∼2 cm (Rosy
Chlorate salts and solutions on Mars
Chlorate (ClO3−) is an intermediate oxidation species between chloride (Cl−) and perchlorate (ClO4−), both of which were found at the landing site by the Wet Chemistry Lab (WCL). The chlorate ion is
The oxidation‐reduction potential of aqueous soil solutions at the Mars Phoenix landing site
Results from the Mars Phoenix mission Wet Chemistry Laboratory (WCL) are used to determine the oxidation‐reduction potential (Eh) of the Phoenix WCL Rosy Red sample soil solution. The measured Eh of
Volatiles Measured by the Phoenix Lander at the Northern Plains of Mars
Detection of Perchlorate and the Soluble Chemistry of Martian Soil at the Phoenix Lander 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 revealed an alkaline environment in contrast to that found by the Mars Exploration Rovers, indicating that many different environments have existed on Mars.
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.
Measurements of Oxychlorine species on Mars
Abstract 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
What can in situ ion chromatography offer for Mars exploration?
TLDR
A breadboard system using capillary IC at low flow rates with an optimized eluent generator and suppressor is demonstrated, demonstrating both the importance of performing soluble ion measurements and the need for improved instrumentation to unambiguously identify all the species present.
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