[Rapid identification of flavonoid compounds in Pericarpium Citri Reticulatae by online extraction-high performance liquid chromatography-diode array detection-quadrupole time-of-flight mass spectrometry].

A simple method was developed for the rapid extraction, separation and identification by online extraction (OLE) coupled with high performance liquid chromatography-diode array detection-quadrupole time-of-flight mass spectrometry (HPLC-DAD-QTOF-MS). For OLE strategy, a guard column filled with Pericarpium Citri Reticulatae powder (2.0 mg) was connected to manual injection valve by replacing the sample loop. Components were directly extracted...