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建立了高效液相色谱法同时测定溃疡软膏中的醋酸氯己定、地塞米松磷酸钠和盐酸达克罗宁。使用Diamonsil C18色谱柱,以醋酸泼尼松为内标,乙腈∶0.1%磷酸为流动相,梯度洗脱,检测波长270 nm。醋酸氯己定、地塞米松磷酸钠和盐酸达克罗宁分别在0.1~1.0、0.015~0.15和0.03~0.3 mg/ml浓度范围内线性关系良好。平均回收率分别为102.35%、103.28%和101.57%,RSD为1.85%、2.15%和1.74%。
A high performance liquid chromatography (HPLC) was developed for the simultaneous determination of chlorhexidine acetate, dexamethasone sodium phosphate and dacronine hydrochloride in ulcer ointment. Diamonsil C18 column was used with internal standard of prednisone acetate and acetonitrile: 0.1% phosphoric acid as the mobile phase. The detection wavelength was set at 270 nm. Chlorhexidine acetate, dexamethasone sodium phosphate and dacronine hydrochloride in the 0.1 ~ 1.0,0.015 ~ 0.15 and 0.03 ~ 0.3 mg / ml concentration range of good linear relationship. The average recoveries were 102.35%, 103.28% and 101.57%, respectively, with RSDs of 1.85%, 2.15% and 1.74%.