Abstract
A general treatment of liquid adsorption chromatography with a mixed mobile phase, starting with Snyder's displacement model and incorporating complexation reactions between solute and solvent molecules and solvent in the mobile phase, is discussed. This treatment leads to an equation defining the dependence of the capacity ratio on the mobile phase composition by means of the thermodynamic equilibrium constants describing this displacement process and complexation reactions in the mobile and stationary phases. This equation may be considerably simplified when only one type of complex forms in the solution.
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