RP-HPLC同时测定苦黄注射液中4种大黄蒽醌类成分含量

目的 :建立同时测定苦黄注射液中大黄素、大黄酸、大黄酚和大黄素甲醚 4种大黄蒽醌类成分含量的反相高效液相色谱分析方法。方法 :采用汉邦LichrospherC₁₈柱 ,流动相组成为A :1%醋酸水溶液 ,B :含 1%醋酸的80%乙腈水溶液 ,梯度洗脱 ,流速 0.8mL·min^-1,柱温 35℃ ,检测波长 254nm ,以外标法定量。结果 :苦黄注射液中 4种蒽醌类成分的平均加样回收率分别为大黄酸 98.9%、大黄素 100.5 %、大黄酚 102.5 %和大黄素甲醚 99.0 % ,线性范围分别为大黄酸 0.0875～175 μg ,大黄素 0.0825～165μg ,大黄酚 0.15 9～ 3.17μg和大黄素甲醚 0.0525～1.05μg。 结论 :本法准确可靠 ,重现性好 ,结果稳定 ,适合于苦黄注射液中这 4种蒽醌含量的分析。

Simultaneous determination of 4 anthraquinones in Kuhuang injection by RP-HPLC

OBJECTIVE: To develop a new high-performance liquid chromatographic method for simultaneous quantitative determination of 4 anthraquinones in Kuhuang injection. METHOD: The chromatographic separation was performed on a Lichrospher C18 column (4.6 mm x 250 mm, 5 microm,), A linear gradient elution of A (CH3COOH: H2O = 1:100) and B (CH3COOH: H2O: CH3CN = 1:20:80) was used. The flow rate was 0.8 mL x min(-1) and column temperature was set at 35 degrees C. The UV detection wavelength was set at 254 nm. RESULT: The recoveries of rhein, emodin, chrysophanol and physcion were 98.9%, 100.5%, 102.5% and 99.0%, respectively. Their linear ranges were 0.0875-1.75 microg for rhein, 0.0825-1.65 microg for emodin, 0.159-3.17 microg for chrysophanol and 0.0525-1.05 microg for physcion, respectively. CONCLUSION: The method was accurate, repeatable and suitable to determine the contents of 4 anthraquinones in Kuhuang injection.