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目的建立高效液相色谱法测定固肠胶囊中没食子酸的含量。方法采用AgilentZORBAXTC-C18(250mm×4.6mm,5μm);流动相:甲醇-0.1%磷酸(8:92);检测波长:271nm;流速:1.0ml/min;柱温:30℃;进样量:10μl。结果没食子酸在0.007944~1.986μg范围内线性良好平均回收率为99.51%,RSD为0.43%。结论本法快速、准确、重现性好,可用于测定固肠胶囊中没食子酸的含量。
Objective To establish HPLC determination of gallic acid in Guchang capsule. The mobile phase was methanol-0.1% phosphoric acid (8:92). The detection wavelength was 271nm. The flow rate was 1.0ml / min. The column temperature was 30 ℃. The injection volume was: 10 μl. Results The average recoveries of gallic acid in the range of 0.007944 ~ 1.986μg were 99.51% with RSD of 0.43%. Conclusion This method is rapid, accurate and reproducible. It can be used to determine the content of gallic acid in Guchang capsule.