Nonadditivity of the gas and liquid phase mass-transfer resistances in gas chromatography

Abstract

The results of a number of papers dealing with the isolation of the ‘C’ terms of the Van Deemter equation and with the interpretation of the respective results led, in many cases, to discrepancies that could not be explained satisfactorily in virtue of the classical Van Deemter or Golay's equations. Abandoning the principle of the independence of the processes controlling the interphase mass transfer in a chromatographic column led to a modified HETP equation, the qualitative predictions of which are in very good agreement with the experimental results.