Published: Journal of Chromatographic Science, Volume 36, Number 6, June 1998, pp. 311–317.
Effect of Temperature on Retention of
Cyclic b-Amino Acid Enantiomers on a Chiral Crown Ether
Stationary Phase
A. Péter, G. Török, and F. Fülöp
The isocratic retention of cyclic b-amino acids is studied on a chiral crown ether column (Crownpak CR[+]) at different temperatures. The natural logarithm of the retention factor (ln k) depends linearly on the inverse of temperature (1/T). van’t Hoff plots afford thermodynamic parameters, such as the apparent change of enthalpy (-H°) and the apparent change of entropy (-S°) for the transfer of analyte from the mobile phase to the stationary phase. The information obtained from the thermodynamic study is discussed, and the qualitative relationships between the structure and the thermodynamic data are evaluated.
Reproduction of editorial content of this journal is prohibited without publisher’s permission.
| This article is available in its entirety by fax for $4.00 per page. Visa or MasterCard accepted. To order electronically click here Please indicate JCS volume and issue along with page numbers. |
Site Map: Home
| Current Issue | Subscribe
|
| Back Issues | About
Us | Meetings | Advertising
|
| Books for Sale | For
the Author | Links |
| Supplier Info |Search
|