Abstract
A combustible gas indicator with a 10 to 1 sensitivity scale has been found to be applicable to the measurements of C2 and higher hydrocarbons from incinerator effluents. Samples are collected in evacuated stainless steel 34-liter tanks. Response to carbon monoxide and methane was differentiated from higher hydrocarbons through the difference in indication with and without a tube of activated carbon in the sampling train. The method is applicable to differentiate between incinerators emitting less than 50 ppm total hydrocarbons and those emitting higher concentrations.