Abstract
In order to obtain high separation efficiencies in capillary electrophoresis, electromigration dispersion has to be minimized either by using very dilute samples in concentrated background electrolytes or by matching the mobilities of the analyte and the co-ion of the background electrolyte. A dynamic mobility matching method is presented here that can be used advantageously in cyclodextrin-containing zwitterionic background electrolytes. A rigorous equilibrium model has been developed to describe the effective electrophoretic mobility of the co-ion of the background electrolyte as a function of the analytical concentrations of the cyclodextrin, the zwitterion buffer, and the hydronium ion
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