An Extension and New Interpretation of Ościk's Equation for Describing Liquid Chromatography with Mixed Mobile Phases. II. Partition and Adsorption Effects

Abstract Previously [J. Liquid Chromatogr. 8 (1985) 1363] it was shown that an equation having a form similar to Ościk's classical equation was derivable from a model involving solute partitioning (with no solute and solvent displacement) between a bulk-liquid mobile phase and a surface-influenced stationary liquid layer. Based on a recent general theory, we now propose a solute retention model which reveals an alternative molecular basis of Ościk's equation, which has been successfully applied to a range of liquid adsorption chromatographic systems. According to this model, solute is distributed between the