The experiment aimed to establish a characteristic chromatogram of the Areca catechu core remaining during the'Areca catechu'processing.Fresh,laboratory simulation of factory conduction and 22 batches of Areca catechu core were analyzed by high performance liquid chromatography(HPLC),ZORBAX 300-SCX column(4.6 mm×250 mm,5 μm)was used,the mobile phase was 0.1%phosphoric acid water-acetonic(90∶10),0.1%phosphoric acid water with amitriptyline pH was 2.30~2.55,the equal elation was carried out,the detection wavelength was 215 nm,the flow rate wa...