Study on reliability of ESM of four points to determine the assay for Ginkgo Terpene Lactones
【Abstract】 Objective Study on the reliability of ESM of four points.Methods HPLC system consisting of an Alltech C18 column(4.6mm×250mm,5μm),and the mobile phase was n-Propyl alchol,tetrahydrofuran and water (1:15:84) at flow rate of 1.0ml/min.The detector temperature was 108.0℃ and the dry gas flow rate was 3.10L/min.Results The ESM of four points has been established.Conclusion The ESM of four points can be used on determine the assay for Ginkgo Terpene Lactones.
【Key words】 ginkgo terpene lactones;assay;HPLC-ELSD;ESM of four points