UOP 899-97

This method is for determining individual trace C₅ minus hydrocarbon impurities in hydrogen or liquefied petroleum gas (LPG), where the specific trace components are sufficiently resolved from the major components, typically propane/propylene or ethane/ethylene. Components eluting after ethyl acetylene are grouped and reported as heavies. The range of quantitation for each component is 2 to 3000 mol-ppm; however, the lower limit of quantitation increases when major components interfere with the resolution of the impurities.