Simultaneous determination of six triterpenic acids in some Chinese medicinal herbs using ultrasound-assisted dispersive liquid-liquid microextraction and high-performance liquid chromatography with fluorescence detection

- A DLLME/HPLC-FLD method for triterpenic acid determination was developed.
- DLLME was firstly used for preconcentration of triterpenic acids in medicinal herbs.
- This method was sensitive and selective for triterpenic acid analysis.
- A new derivatization reagent for triterpenic acid has been synthesized.