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Thin-layer adsorption chromatography with mixed mobile phases. 4. Extension of Ościk's equation to heterogeneous adsorbents

✍ Scribed by Różyło, J. K. ;Ościk, J. ;Ościk-Mendyk, B. ;Jaroniec, M.

Publisher
John Wiley and Sons
Year
1981
Tongue
English
Weight
483 KB
Volume
4
Category
Article
ISSN
0935-6304

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✦ Synopsis

Abstract

In this paper the equation for thin‐layer adsorption chromatography with multicomponent mobile phases, proposed by Ościk in 1965 is extended to energetically heterogeneous solid surfaces. Other forms of this equation, more convenient in practical applications, are presented. Model calculations are made for TLC with binary mobile phases according to the modified form of Ościk's equation. Finally, this equation is compared with that of Snyder.

📜 SIMILAR VOLUMES

Thin-layer adsorption chromatography wit
Thin-layer adsorption chromatography with mixed mobile phases. 1. Characterization of chromatographic systems showing energetic heterogeneity of adsorbent surfaces with regard to admolecules of solvents and solutes
✍ Różyło, J. K. ;Jaroniec, J. A. ;Kołodziejczyk, H. ;Jaroniec, M. 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 454 KB 👁 1 views

## Abstract Thin‐layer adsorption chromatography with a multicomponent mobile phase is discussed. A new equation for predicting R~M~‐values in TLC with mixed mobile phases using the R~M~‐ValUeS obtained for pure solvents is proposed. This equation takes into account effects of energetic heterogenei

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Thin-layer adsorption chromatography with mixed mobile phases. 2. Effects of solute-solvent interactions and energetic heterogeneity of surfaces with regard to admolecules in TLC
✍ Rózyło, J. K. ;Jaroniec, M. ;Jaroniec, J. A. ;Kolodziejczyk, H. 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 175 KB 👁 2 views

## Abstract In the Part 1 of this series a new equation for determining the R~m~ values in TLC with mixed mobile phases was proposed and examined by using the parameter m, which is a measure of energetic heterogeneity of the adsorbent surface with regard to the adsorbing molecules (admolecules). T