Title
Potentiometric detection of organic ionics in separation methods : a critical evaluationPotentiometric detection of organic ionics in separation methods : a critical evaluation
Author
Faculty/Department
Faculty of Sciences. Chemistry
Research group
Chromatographic Organic Trace Analysis
Publication type
article
Publication
Subject
Chemistry
Source (journal)
Polish journal of chemistry
Source (book)
Symposium on From Molecular Recognition to Molecular Devices, SEP 20-22, 2007, Gdansk, POLAND
Volume/pages
82(2008):6, p. 1199-1205
ISSN
0137-5083
ISI
000256407800007
Carrier
E
Target language
English (eng)
Affiliation
University of Antwerp
Abstract
Ionically conducting rubber phase coatings are suited for use in the mobile phase conditions of HPLC (gradient elution, organic mobile phase components), and for low flow-rate applications such as used in capillary electrophoresis (CE). Especially organic ionic analytes of industrial-, biotech- and pharmaceutical environments are the potential fields of application. Much work remains to be done to understand why multiply charged molecules perform much better than expected from models used for small polyionic (mostly metal ion) subjects. The present work concentrates on phenomena that at first sight could be classified as deviations from Nernst and Nicolskii-Eisenmann type behaviour. The non-equilibrium conditions in hydrodynamic methods, lack of experimental data and lack of insight into the process generating potential are shown as the cause of misinterpretations when using this young and promising technique.
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