Optimization of a CUPRAC-Based HPLC Postcolumn Assay and Its Applications for Ginkgo biloba L. Extracts

Figure 2

Dependence of peak height-to-baseline noise ratio on CUPRAC solution flow rate. The following standards were used: quercetin, 0.074 mg mL⁻¹; kaempferol, 0.084 mg mL⁻¹; isorhamnetin, 0.085 mg mL⁻¹ (injected volume: 10 μL;  nm).