Correspondence Factor Analysis (CFA) permits the Identification of the major influences on behavior of saturated and unsaturated hydrocarbons In gas-solid chromatography on Ion-exchangers In different cationic forms. The stationary phases are prepared from sulfonated Porapak Q ethylvlnylbenzene-dlvlnylbenzene copolymer. CFA shows that Ion exchangers In the Ag+, Nl2+, Zn2+, and Cd2+ forms offer different selectivitles with the unsaturated hydrocarbons, depending on their nature, degree of substitution and -bondlng abilities. Steric hindrance of this selectivity occurs with the larger cations such as Ag+. The H+, K+, Na+, and Tl+ forms are practically nonselectlve relative to the unsulfonated copolymer matrix.

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