The analysis of active ingredients of traditional Chinese medicines is often a very difficult task, since these medicines are usually in the form of multicomponent prescriptions, and each component may show a complicated profile of constituents. Capillary electrophoresis (CE) is becoming recognized as an important separation technique because of its speed, efficiency, ultra-small sample volume, and little consumption of solvent. With electrochemical detection (ED), CE-ED offers high sensitivity and good selectivity. In this work, we first reported a simple and rapid method to determine active ingredients in three Chinese traditional medicines by CE-ED.
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