Abstract
Based on an axial dispersion model, a generalized equation for HETP in column chromatography ispresented. From this equation, Van Deemter's equation for packed column and Golay's for capillary col-umn can be derived under simplified conditions. The generalized equation can be used to obtain variousempirical equations for HETP and gives physical significance to the empirical constants in them. It isadaptable to all column chromatography including packed and capillary columns as well as gas andliguid chromatography.
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