Abstract
The possibilities of utilizing the UNIFAC group model of activity coefficients for the prediction of gas—liquid chromatographic retention data are discussed. Examples of the determination of the specific retention volumes of different types of solute compounds on both simple and mixed stationary phases, relative retentions, Kováts retention indices and differential sorption enthalpies are given. It appears that the original version of the UNIFAC model can be used merely to give a rough estimation of relative retentions, Kováts retention indices and sorption enthalpies.
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