Abstract
Abstract An extension of oscik's original approach, which was first proposed for liquid solid chromatography (LSC) with a multicomponent eluent in the normal-phase mode (Przem. Chem. 44, 1965, 129), leads to a new equation describing the dependence of the distribution coefficient upon mobile phase composition. This equation is also derived in terms of the expressions defining classical partitioning (J. Phys. Chem. 87, 1983, 1045). The above derivation provides a new view on the physical meaning of the parameters and indicates that Ośck's equation is more suitable for describing partition effects in reversed-phase liquid chromatography (RPLC).
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