Determination of the ionization constants of weak electrolytes by capillary zone electrophoresis
作者:
Jianyi Cai,
Joel Tim Smith,
Ziad El Rassi,
期刊:
Journal of High Resolution Chromatography
(WILEY Available online 1992)
卷期:
Volume 15,
issue 1
页码: 30-32
ISSN:0935-6304
年代: 1992
DOI:10.1002/jhrc.1240150108
出版商: Wiley Subscription Services, Inc., A Wiley Company
关键词: Capillary zone electrophoresis;Ionization constants;Aromatic amines
数据来源: WILEY
摘要:
AbstractCapillary zone electrophoresis in untreated fused silica capillaries has proved suitable for the determination of the ionization constants of weak electrolytes. Several fundamental equations relating the electrophoretic mobilities of ionized solutes to hydronium ion concentrations in the running electrolyte have been verified experimentally. The observed dependence of the electrophoretic mobilities of weak bases and ampholytes on the pH of the electrolyte showed good agreement with predicted behavior. The pKavalues calculated from electrophoretic mobility data obtained by capillary zone electrophoresis were reasonably close to those reported in the literature.
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