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用高效液相色谱法，以牛蒡子苷为对照品，测定了新药凉解感冒合剂中主要成分牛蒡子所含的牛蒡子苷的含量。牛蒡子苷浓度在3．00～20．48μg／ml范围内有良好线性关系，回收率为100．2％，RSD0．22％（n＝5）。
Using high performance liquid chromatography and frangipani as the reference substance, the content of arctiin contained in the main component of Arctium blazei in New Drug Lianglianggan Mixture was determined. There was a good linear relationship between the concentration of arctiin in the range of 3.00 to 20.48 μg/ml, with a recovery of 100.2% and an RSD of 0.22% (n=5).