Biology
Scientific paper
Sep 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jgr....82.4669o&link_type=abstract
Journal of Geophysical Research, vol. 82, Sept. 30, 1977, p. 4669-4676.
Biology
45
Exobiology, Gas Exchange, Mars Surface Samples, Soils, Viking Lander Spacecraft, Argon, Carbon Dioxide, Desorption, Iron Oxides, Nitrogen, Water Vapor
Scientific paper
Immediate gas changes occurred when untreated Martian surface samples were humidified and/or wet by an aqueous nutrient medium in the Viking lander gas exchange experiment. The evolutions of N2, CO2, and Ar are mainly associated with soil surface desorption caused by water vapor, while O2 evolution is primarily associated with decomposition of superoxides inferred to be present on Mars. On recharges with fresh nutrient and test gas, only CO2 was given off, and its rate of evolution decreased with each recharge. This CO2 evolution is thought to come from the oxidation of organics present in the nutrient by gamma Fe2O3 in the surface samples. Atmospheric analyses were also performed at both sites. The mean atmospheric composition from four analyses is N2, 2.3%; O2, not greater than 0.15%; Ar, 1.5% and CO2, 96.2%.
Berdahl Bonnie J.
Oyama Vance I.
No associations
LandOfFree
The Viking gas exchange experiment results from Chryse and Utopia surface samples does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Viking gas exchange experiment results from Chryse and Utopia surface samples, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Viking gas exchange experiment results from Chryse and Utopia surface samples will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1097671