Reversed phase plate theory

Before setting out on the exact mean field theory solution to the one-dimensional colloid problem, I wish to emphasize that the existence of the reversible phase transition in the n-butylammonium vermiculite system provides decisive evidence in favor of our model. The calculations presented in this chapter are deeply rooted in their agreement with the experimental facts on the best-studied system of plate macroions, the n-butylammonium vermiculite system [3], We now proceed to construct the exact mean field theory solution to the problem in terms of adiabatic pah-potentials of both the Helmholtz and Gibbs free energies. It is the one-dimensional nature of the problem that renders the exact solution possible. 

Extraction chromatography (reversed phase partition chromatography) has been used in analytical and biochemistry to effect chemical separations. It is a method which combines the simplicity of ion exchange and the selectivity of solvent extraction. Ion exchange theory may be used to calculate the number of theoretical plates in the column and the enrichment coefficient. Extraction chromatography as a separation method has been recently reviewed by Cerrai (J) and Katykhin (7). 

CHROMATOGRAPHIC PLATE THEORY AND REVERSED-PHASE SOLID-PHASE EXTRACTION... 

Structure of Reversed-Phase Sorbents Reversed Phase as a Partitioning Mechanism Chromatographic Plate Theory and Reversed-Phase Solid-Phase Extraction... 

Now, if the reverse phase is considered to be packed into a column and operated with a mobile phase having a solvent concentration of (C ) in water, the corrected retention volume, (V,), is given by the equation derived from the Plate Theory ... 

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