Abstract
Based on the previously reported linear relationship between the logarithm of the capacity factor and the logarithm of the binary solvent composition, a procedure for finding concentrations of a stronger eluent or a diluent in the binary mobile phase with an approximately equal elution strength for general compounds was established using mono- and disubstituted steroid derivatives as solutes on a silica get column. The design of an equi-eluotropic binary solvent system was compared with Snyder's and Neher's previously proposed calculations. This new procedure can be useful for the selection of an optimal solvent system that has maximal selectivity for a given sample mixture in liquid—solid chromatography.
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