当归拈痛合剂的质量标准研究

目的:建立当归拈痛合剂的质量标准.方法:采用薄层层析法对当归拈痛合剂中的当归、苦参和甘草3味中药进行定性鉴别;用高效液相色谱(HPLC)法测定黄芩苷含量,色谱柱为Agilent公司Zorbax SB-C18(4.6×250mm),流动相为甲醇-0.2%磷酸溶液(48:52);检测波长为278 nm,柱温为40℃,流速为1.0 mL/min.结果:在TLC中能够检出当归、苦参和甘草,阴性对照无干扰;黄芩苷进样量在0.25～2.50μg范围内与峰面积线性关系良好,平均加样回收率为101.8%,RSD为1.65%.结论:所用定性、定量方法简便、可靠、专属性强,重复性好,可用于当归拈痛合剂的质量控制.

Study on Quality Standard of Danggui Niantong Heji

Objective: To establish the quality standard of Danggui Niantong Heji. Methods: The TLC method for identification of Radix Angelicae Sinensis, Radix Sophorae Flavescentis, Radix et Rhizoma Glycyrrhizae were established. Baicalin was determined by HPLC. On Zorbax SB-C18 column(4.6×250 mm),the UV detector was set at 278 nm. The column temperature was at 40 ℃. The mobile phase was methanol-0.2% H_3PO_4 (48 : 52) and the flow rate was 1.0 mL/min. Results: Radix Angelicae Sinensis, Radix Sophorae Flavescentis, Radix et Rhizoma Glycyrrhizae could be detected. The calibration curve showed good linearity. The average recovery rate of baicalin was 101.8% ,RSD=1.65%. Conclusion The method is simple, rapid and reproducible. It is suitable for the quanlity control of Danggui Niantong Heji.