Correlation between excess adsorption data measured for solvent mixture/adsorbent systems and RM values obtained for different solutes chromatographed in binary mobile phases
✍ Scribed by Ościk-Mendyk, B. ;Ró??ło, J. K. ;Jaroniec, M.
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- English
- Weight
- 363 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0935-6304
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✦ Synopsis
Abstract
This paper concerns the application of excess adsorption isotherms, measured for solvent mixture/adsorbent systems, to the characterization of TLC data. For this purpose the excess adsorption isotherms for three liquid mixtures: cyclohexane/ benzene, benzene/acetone, and carbon tetrachloride/ethyl acetate on silica gel at 20°C have been measured. These mixtures have been used as binary mobile phases in TLC measurements. It has been shown for a given solute in binary mobile phase that the quantity R~M~ is a simple function of the excess adsorption. Parameters of this function have been used to characterize chromatographic systems with binary mobile phases.