Gas Analysis by Means of Detector Tubes. Part 3. Rapid Determination of Low Concentrations of Ethylene and Acetylene
ARMY BIOLOGICAL LABS FREDERICK MD
Pagination or Media Count:
Mixed ammonium molybdate and palladium sulfate reagent was sorbed on to silica gel particles, the granules were dried in vacuum, and the granules were packed into thin glass tubes to prepare gas detector tubes. By passing a sample gas through this detector tube at the rate of 100 ccmin, ethylene concentration between 0.01-100 ppm and acetylene concentration between 1-1000 ppm could be determined in a simple manner within a few tens of minutes or less from the color-volume relations. This method of detecting trace quantities of ethylene and acetylene can be put to practical use to detect the initial stages of the spontaneous combustion of coal in mines as well as to analyze the air that is taken into air fractionating units.
- Physical Chemistry