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  • 1
    ISSN: 0935-6304
    Keywords: Thin-layer chromatography, TLC ; TLC with mixed mobile phases ; Adsorption chromatography ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Considerations of TLC process optimization have been based on the thermodynamic theory of adsorption from multicomponent solvents using experimental and theoretical RM1, 2 = f (Φ1) relationships. It was found that a relationship exists between the Az parameter (log k1,2∞ where k1,2∞ is the partition coefficient of the substance chromatographed) of the above theory and pKa values of substances as well as the solubility parameter δ of the mobile phase components. Analysis of the Az values of substances shows that a slight variation therein is associated with lower selectivity of chromatographic separation.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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