Summary
Retention of small molecules on reversed phase or other hydrophobic stationary phases can be represented by k′ values of members of a homologous series at varying solvent compositions. The evaluation of simple linear relationships leads to the introduction of a set of four parameters that contain all the information about retention behaviour of this homologous series in the binary solvent system chosen. It is possible to extrapolate to a hypothetical non-hydrophobic molecule and a solvent, the polarity of which equals that of the stationary phase, to characterize the properties of the stationary phase — eluent system. In addition, a chromatographic method for determination of the phase ratio of the column is proposed.
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Czok, M., Engelhardt, H. A practical description of retention in reversed phase chromatography using four parameters. Chromatographia 27, 5–14 (1989). https://doi.org/10.1007/BF02290396
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DOI: https://doi.org/10.1007/BF02290396