Abstract

The quantitative precision in capillary zone electrophoresis (CZE) with electrokinetic injection can be improved by proper correction with the integrated current during injection. By monitoring the electrophoretic current during separation, one can also correct for temporal fluctuations in the analyte migration velocity. A model based on field-amplified capillary electrophoresis is used to describe the electrokinetic injection process involving sample solutions with distinct conductivities, and an equation is developed to allow normalization of peak areas at the 0-5% level without the need of quantitative internal standardization. 28 refs., 2 figs., 2 tabs.

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