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Thermodynamic investigation of the sample retention mechanism in ion-exclusion chromatography with an inclusion compound in the mobile-phase

Citation

Glod, BK and Alexander, PW and Chen, ZL and Haddad, PR, Thermodynamic investigation of the sample retention mechanism in ion-exclusion chromatography with an inclusion compound in the mobile-phase, Analytica Chimica Acta, 306, (2-3) pp. 267-272. ISSN 0003-2670 (1995) [Refereed Article]


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DOI: doi:10.1016/0003-2670(94)00683-D

Abstract

In this paper the retention mechanism of the solute retention in ion-exclusion chromatography with β-cyclodextrin in the mobile phase is presented. The values of the adsorption and inclusion constants are estimated from the dependence of solute retention on cyclodextrin concentration. From the van't Hoff dependence the entropy and enthalpy changes are determined. It was found that increase of the temperature decreases the adsorption and the complexation constants. For adsorption negative values were obtained for enthalpy and entropy changes. Negative values for enthalpy and positive values for entropy changes were obtained for complexation.

Item Details

Item Type:Refereed Article
Keywords:Chromatography; Retention mechanism; Inclusion compounds; Cyclodextrins
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Analytical Chemistry not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Alexander, PW (Professor Peter Alexander)
Author:Haddad, PR (Professor Paul Haddad)
ID Code:4430
Year Published:1995
Web of Science® Times Cited:9
Deposited By:Chemistry
Deposited On:1995-08-01
Last Modified:2010-02-20
Downloads:0

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