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
URL:
http://dx.doi.org/10.1002/jhrc.1240050306
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