Analysis of Three Compounds in Flos Farfarae by Capillary Electrophoresis with Large-Volume Sample Stacking

Figure 2

Electropherograms of (a) standard solution and (b) sample solution by CZE: (1) rutin; (2) hyperoside; (3) chlorogenic acid. CZE conditions: 40 mM NaH₂P0₄-40 mM borax (pH 9.0)-30% v/v methanol; voltage: 20 kV; injection volume: 0.5 psi, 4 s; detection wavelength: 364 nm; the concentration of individual compounds in standard sample: 200 ug/mL.