Simultaneous assay of paeoniflorin and albiflorin in Paeoniae Radix Alba by QAMS Application of relative correction factor in multi-index determination of Chinese materia medica Application of relative correction factor in multi-index determination of Chinese materia medica A quantitative method for simultaneous assay of four flavones with one marker in Radix Scutellariae Simultaneous assay of four isoflavonoids in Astragali Radix by QAMS Simultaneous determination of six components in water extract and alcohol precipitation liquid in Astragali Radix by HPLC-UV-ELSD A quantitative method for simultaneous assay of four flavones with one marker in Radix Scutellariae