METHODS:The Baicalin which was precipitated by adding HCl in Diqin injection,then centrifugalized the precipitated and was melted by Etoh was determined by UV spectrophotometic.

• 方法:采用加酸,使制剂中黄芩甙沉淀析出并离心分离,以乙醇溶解后用紫外分光光度法测定黄芩甙含量。