【摘要】 目的:建立同时测定痤疮酊中氯霉素和水杨酸含量的方法。方法:采用高效液相色谱法。色谱柱为Shim-pack CLCODS,流动相为甲醇-水(50∶50,V/V),流速为0.8 ml/min,检测波长为278 nm,柱温为35℃,进样量为10μl。结果:氯霉素和水杨酸质量浓度分别在2.0~10.0μg/ml(r=0.999 2)、5.0~25.0μg/ml(r=0.999 1)范围内与各自峰面积呈良好的线性关系;精密度、稳定性、重复性试验的RSD<1%;氯霉素和水杨酸的平均加样回收率分别为99.77%、99.29%,RSD分别为0.35%、0.48%(n=9)。结论:该方法操作简便、快速,结果准确,专属性好、精密度高,可用于痤疮酊的质量控制。更多还原

【Abstract】 OBJECTIVE:To establish a method for the content determination of chloramphenicol and salicylic acid in Acne tincture. METHODS:HPLC method was adopted with the column of Shim-pack CLC-ODS with the mobile phase of methanol-water(50 ∶ 50,V/V)at the flow rate of 0.8 ml/min. The detection wavelength was 278 nm,column temperature was 35 ℃,and the volume was 10 μl. RESULTS:The linear range was 2.0-10.0 μg/ml(r=0.999 2)for chloramphenicol and 5.0-25.0 μg/ml(r=0.999 1)for salicylic acid;the RSDs of precision,stability and repeatability tests were lower than 1%;the average recoveries chloramphenicol and salicylic acid were respectively 99.77%(RSD=0.35%,n=9) and 99.29%(RSD=0.48%,n=9). CONCLUSIONS:The method is simple,rapid,accurate,specific,precise,and can be used for quality control of Acne tincture.更多还原