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目的:建立胃长泰口服液中黄芩苷的含量测定方法。方法:采用HPLC法,色谱柱Diamondsil C_(18)(150 mm×4.6 mm,5μm)。流动相为甲醇-水-磷酸(50:50:0.2)。检测波长278 nm。结果:黄芩苷进样量在0.21~1.05μg之间呈良好的线性关系(r=0.999 8)。平均回收率为99.03%,RSD为2.3%。结论:测定方法简便、准确,重复性好,可用于该产品的质量控制。
Objective: To establish a method for the determination of baicalin in Weichangtai oral liquid. Methods: The HPLC method was applied to the chromatographic column Diamondsil C_(18) (150 mm×4.6 mm, 5 μm). The mobile phase was methanol-water-phosphoric acid (50:50:0.2). The detection wavelength is 278 nm. RESULTS: A good linear relationship (r=0.999 8) was observed between the injections of baicalin in the range of 0.21 to 1.05 μg. The average recovery was 99.03%, and the RSD was 2.3%. Conclusion: The method is simple, accurate, and reproducible. It can be used for quality control of the product.