| Popis: |
The effects of packing materials on H infiltration into sample capsules during pistoncylinder experiments has been examined using samples of oxalic acid dihydrate, silver oxalate, and pure carbon dioxide. Mass scans revealed that as much as several mole percent carbon monoxide, accompanied by H20, can result from a reaction between H and carbon dioxide in experiments using all three reactants. A measurable 0 isotopic shift was detected in carbon dioxide samples where carbon monoxide was detected. Traditional means for measuring C-O-H volatile composition at the end of piston-cylinder experi~ents will not ident~fYthis chemical change in the volatile composition and may result m erroneous determmation of fluid composition. Glass and witherite packing materials effectively maintaineda lowfH2 around the samples. |
