Investigation of experimental approaches to the determination of pKa values by capillary electrophoresis
β Scribed by S.J. Gluck; J.A. Cleveland Jr.
- Book ID
- 107785307
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 654 KB
- Volume
- 680
- Category
- Article
- ISSN
- 1873-3778
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## Abstract Thermodynamic p__K__~a~ values for benzimidazole and several substituted benzimidazoles were determined by CE. Electrophoretic mobilities of benzimidazoles were determined by CE at different pH levels and ionic strengths. The dependence of electrophoretic mobilities on pH was used to ob
CZE allows to measure the acidic dissociation constant (pKa) of many drug substances. However, determining the EOF intensity may be time-consuming, especially at a low pH. In order to overcome this drawback, a dynamic coating procedure of the capillary was carried out to increase microEOF, and thus