A GROUP-CONTRIBUTION METHOD FOR GAS-CHROMATOGRAPHIC CORRECTION FACTORS FOR COMPLEX HYDROCARBON MIXTURE ANALYSIS

A frequent problem in quantitative gas-chromatographic analyses of mul ticomponent hydrocarbon mixtures results from the fact that certain hy drocarbons might not be available as gas-chromatographic standards, As a consequence assumptions have to be made about their correction fact ors, which account for the dependency of detector signals on molecular structures. These estimates often lead to major analytical errors. Fo r that reason a group contribution method has been developed by which correction factors for hydrocarbons with paraffinic, naphthenic and ar omatic molecular structures can be calculated from increment values of 17 structural groups.