, Volume 9, Issue 2, pp 74–77 | Cite as

Thin-layer adsorption chromatography; Influence of adsorbent porosity on the relationship between RM values and the composition of a mobile phase consisting of nonpolar and electron donor components

  • J. K. Różyło


The present paper deals with the applicability of the equation relating RM values of the solute to the composition of a two-component liquid mobile phase. Dependence of the above factors on the porosity of silica gel adsorbents, used as a stationary phase, was examined. The examinations were carried out on adsorbents with pore diameters ranging from 60 to 1000 Å. The mobile phase was a two-component solvent mixture: carbon tetrachloride — acetone. A number of aromatics were used as model solutes. The examinations showed that the porosity of silica gels when using two-component solvent mixtures which are conformal solutions as the mobile phase, has no influence on the agreement of the theoretical and experimental\(R_{M_{1,2} } = f(\varphi _1 )\) functions. A fairly good agreement was obtained between the theoretical and experimental data.


Porosity Mobile Phase Electron Donor Pore Diameter Tetrachloride 
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Copyright information

© Friedr. Vieweg & Sohn, Verlagschesellschaft mbH 1976

Authors and Affiliations

  • J. K. Różyło
    • 1
  1. 1.Department of Physical Chemistry, Institute of ChemistryM. Curie-Skłodowska UniversityLublinPoland

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