Open Access Repository
Effect of drying on the degradation of cationic surfactants and separation performance in capillary zone electrophoresis of inorganic anions
Downloads
Downloads per month over past year
![]() |
PDF
215.pdf.pdf | Request a copy Full text restricted Available under University of Tasmania Standard License. |
Abstract
Tetradecyltrimethylammonium bromide (TTAB) is used in capillary zone electrophoresis (CZE) to control the direction and magnitude of the electroosmotic flow and the migration time of analyte anions. Drying of the hygroscopic TTAB at 100°C overnight has been found to influence the final CZE separation by providing improved resolution, precision of migration times, and enhanced detection response for hydrogenphosphate. Chemical analysis of the dried TTAB using IR and GC–MS indicated the presence of small amounts of an unexpected tertiary alkylamine, tetradecyldimethylamine. This amine appears to contribute to the improved separation, probably by making more effective the masking of silanophilic activity at the capillary surface and/or generating a more stable double-layer.
Item Type: | Article |
---|---|
Authors/Creators: | Harakuwe, AH and Haddad, PR and Davies, NW |
Keywords: | Inorganic anions; Surfactants; Tetradecyltrimethylammonium bromide; Tetradecyldimethylamine |
Journal or Publication Title: | Journal of Chromatography A |
ISSN: | 0021-9673 |
DOI / ID Number: | 10.1016/S0021-9673(99)00952-8 |
Additional Information: | The definitive version is available at http:..www.sciencedirect.com |
Item Statistics: | View statistics for this item |
Actions (login required)
![]() |
Item Control Page |