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Preparation and characterization of p-tert-butylcalix[8]arene bonded capillaries for open-tubular capillary electrochromatography

Citation

Wu, X and Liu, H and Liu, H and Zhang, S and Haddad, PR, Preparation and characterization of p-tert-butylcalix[8]arene bonded capillaries for open-tubular capillary electrochromatography, Analytica Chimica Acta, 478, (2) pp. 191-197. ISSN 0003-2670 (2003) [Refereed Article]

DOI: doi:10.1016/S0003-2670(02)01519-2

Abstract

p-tert-Butylcalix[8]arene bonded capillaries for open-tubular capillary electrochromatography were prepared with γ-glycidoxypropyltrimethoxysilane as a bridge. The bonded capillary displayed low and steady electroosmotic flow (EOF) values over the pH range from 4 to 9. Detection limits for direct spectrophotometric detection at 277nm for benzenediols (at a signal to noise ratio of 2) were 0.96mgl-1 for the unbonded capillary and 1.48mgl-1 for the bonded capillary, showing that the bonded layer did not show significant absorbance and hence decreased sensitivity. The bonded capillaries showed good separation selectivity for o-, m- and p-benzenediols, α- and β-naphthols, and α- and β-naphthylamines. This selectivity was attributed to significant interactions between the analytes and the bonded p-tert-butylcalix[8]arene, which contributed to the electrochromatographic separation mechanism. The bonded capillaries gave high stability and reproducibility. © 2002 Published by Elsevier Science B.V.

Item Details

Item Type:Refereed Article
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
Author:Zhang, S (Mr Eric Zhang)
Author:Haddad, PR (Professor Paul Haddad)
ID Code:27504
Year Published:2003
Web of Science® Times Cited:23
Deposited By:Chemistry
Deposited On:2003-08-01
Last Modified:2009-08-06
Downloads:0

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