Fr. Gonzalez et al., CONSIDERATIONS ON THE DEPENDENCE OF GAS-LIQUID-CHROMATOGRAPHIC RETENTION OF N-ALKANES WITH THE CARBON NUMBER, Journal of chromatography, 810(1-2), 1998, pp. 105-117
Citations number
35
Categorie Soggetti
Chemistry Analytical","Biochemical Research Methods
The contributions to the free energy change involved in the chromatogr
aphic retention of n-alkanes, which are functions of the solute chain
length, are discussed with the aid of recent advances in chain statist
ics. In the context of a simplified theoretical analysis, a discussion
is promoted on the molecular nature of the observed slight deviations
from linearity of ln t(R)' vs. n. A non-linear function ln t(R)'(n) i
s derived from the application of the generalized Van der Waals fluid
partition function to the liquid stationary phase. The excluded volume
, particularly its dependence on n, is analyzed through the theory of
Flory for dilute solutions of chain molecules. (C) 1998 Elsevier Scien
ce B.V. All rights reserved.