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Thermodynamic investigation of the sample retention mechanism in ion-exclusion chromatography with an inclusion compound in the mobile-phase
journal contribution
posted on 2023-05-16, 09:43 authored by Glod, BK, Alexander, PW, Chen, ZL, Paul HaddadPaul HaddadIn 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.
History
Publication title
Analytica Chimica ActaVolume
306Issue
2-3Pagination
267-272ISSN
0003-2670Department/School
University CollegePublisher
ELSEVIER SCIENCE BVPlace of publication
Amsterdam, The NetherlandsRights statement
The definitive version is available at http://www.sciencedirect.comRepository Status
- Restricted