Optimization of separations of alkyl-substituted phenolate anions by capillary zone electrophoresis

✍ Scribed by Benz, Nancy J. ;Fritz, James S.

• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 398 KB
• Volume: 18
• Category: Article
• ISSN: 0935-6304
• DOI: 10.1002/jhrc.1240180308

✦ Synopsis

Abstract

Anions of alkylphenols have very similar electrophoretic mobilities in CZE owing to their very small differences in size and the narrow range of their p__K__~a~ values. By studying electrophoretic mobility as a function both of pH and of the amount of acetonitrile in the electrolyte solution, optimum separation conditions were determined. It was possible to separate a group of methyl‐substituted phenols, including several positional isomers. Mixtures containing n‐propyl and isopropyl phenols and 1°, 2°, and 3° butylphenols could be resolved.