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Behaviour of basic compounds in ion-exchange capillary electrochromatography with low pH carrier electrolytes
Citation
Klampfl, CW and Haddad, PR, Behaviour of basic compounds in ion-exchange capillary electrochromatography with low pH carrier electrolytes, Journal of Chromatography A, 884, (1-2) pp. 277-285. ISSN 0021-9673 (2000) [Refereed Article]
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DOI: doi:10.1016/S0021-9673(99)01314-X
Abstract
This work describes the separation of basic aromatic compounds by capillary electrochromatography employing acidic carrier electrolytes and bare silica as well as strong cation-exchange stationary phases. A mixed-mode separation mechanism was involved, comprising chromatographic interactions (adsorption, ion-exchange) as well as electrophoretic migration. The influence of ion-exchange on the retention/migration of the solutes could be manipulated according to procedures commonly employed in ion chromatography. These include variations of the eluting strength and/or the concentration of the competing ion present in the background electrolyte. Using this approach, separation times could be shortened and changes in selectivity could be achieved for a number of analytes.
Item Details
Item Type: | Refereed Article |
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Keywords: | Aniline; Toluidines; Pyridine; Benzylamine; Aminopyridines;Electrochromatography; Background electrolyte composition; Mixed-mode chromatography |
Research Division: | Chemical Sciences |
Research Group: | Analytical chemistry |
Research Field: | Separation science |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the chemical sciences |
UTAS Author: | Klampfl, CW (Dr Christian Klampfl) |
UTAS Author: | Haddad, PR (Professor Paul Haddad) |
ID Code: | 19327 |
Year Published: | 2000 |
Web of Science® Times Cited: | 25 |
Deposited By: | Chemistry |
Deposited On: | 2000-08-01 |
Last Modified: | 2010-02-20 |
Downloads: | 0 |
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