M. Koel et al., EVOLVED GAS-ANALYSIS OF INORGANIC MATERIALS USING THERMOCHROMATOGRAPHY - MODEL INORGANIC SALTS AND PALAGONITE MARTIAN SOIL SIMULANTS, Analytical chemistry, 69(22), 1997, pp. 4586-4591
Evolved gas analyses are presented of several model inorganic salts an
d Mars soil simulating palagonite minerals. The measurements are perfo
rmed with a low-volume, thermal furnace, interfaced to a capillary gas
chromatograph (GC) via a computer-controlled, pneumatic sample inlet
device using pseudorandom injection and correlation analysis. The syst
em, a thermochromatograph (ThGC), permits temperature-resolved, high-s
peed GC analysis of the evolving components in the pyrolyzing sample's
headspace. The ''information content'' performance of this inherently
simpler system is comparable to that of TG/GC/MS and TG/GC/IR systems
when similar materials are analyzed.