US EPA Method 15, 15A

Method 15

Measurement of Gaseous Hydrogen Sulfide, Carbonyl Sulfide, and Carbon Disulfide by Gas Chromatography

This method applies to the determination of emissions of reduced sulfur compounds from tail gas control units of sulfur recovery plants, H2S in fuel gas for fuel gas combustion devices, and where specified in other applicable subparts of the regulations.

Method 15A

Determination of Total Reduced Sulfur Emissions from Sulfur Recovery Plants in Petroleum Refineries

This method is applicable for the determination of emissions of reduced sulfur compounds from sulfur recovery plants where the emissions are in a reducing atmosphere.