Figure 6

UHPLC-ECD chromatograms of six phenolic acids in standard mixture solution (25 μg/mL) and Danshen tablets pretreated with MSPDM method: a: 25 μg/mL of standard mixtures; b: Danshen tablets sample.

UHPLC-ECD chromatograms of six phenolic acids in standard mixture solution (25 μg/mL) and Danshen tablets pretreated with MSPDM method: a: 25 μg/mL of standard mixtures; b: Danshen tablets sample.