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作 者:黄良永[1] 张志权[1] 阎文强[1] 郑江萍[1]
机构地区:[1]湖北医药学院附属太和医院药学部,湖北十堰442000
出 处:《中国药师》2011年第4期495-497,共3页China Pharmacist
摘 要:目的:建立滴强灵胶囊中3组分的HPLC测定方法。方法:以COSMOSIL C_(18)(250 mm×4.6 mm,5μm)为色谱柱,以醋酸铵溶液[0.25 mol·L^(-1)醋酸铵溶液-0.05 mol·L^(-1)EDTA-2Na溶液-三乙胺(100:10:1),用醋酸调pH至7.5]-乙腈(88:12)为流动相测定甲硝唑和土霉素的含量,流速1 ml·min^(-1),检测波长280 nn,柱温30℃;以甲醇-水(60:40)为流动相测定醋酸泼尼松的含量,流速1 ml·min^(-1),检测波长240 nm,柱温30℃。结果:建立的HPLC法能排除辅料对主药中3组分的干扰,甲硝唑、土霉素、醋酸泼尼松的含量测定的线性范围分别为0.04~0.80 mg·ml^(-1)(r=0.999 9),0.02~0.40 mg·ml^(-1)(r=0.999 9)和0.02~0.40 mg·ml^(-1)(r=0.999 9);平均回收率分别为99.94%(RSD=0.07%)、99.85%(RSD=0.09%)、98.16(RSD=1.58%)(n=6)。结论:本法操作简便可靠,可用于滴强灵胶囊的质量控制。Objective: To establish an HPLC method for determination of metronidazole ( MTZ), oxytetracycline (OTT) and prednisone acetate (QDS) in Diqiangling capsules. Method: The COSMOSIL C18 column (250 mm× 4. 6 mm, 5μm) was used, and ammonium acetate solution[0. 25 mol·L-1 ammonium acetate-0. 05 EDTA-2Na-triethylamine ( 100: 10:1 ) ,adjusting pH to 7. 5 with acetic acid-acetonitrile (88: 12) was applied as the mobile phase to determine MTZ and OTT with the flow rate of 1.0 ml·min-1 and detection wavelength of 280 nm. Methanol-water (60: 40) was applied as the mobile phase to determine QDS with the flow rate of 1.0 ml· min -1 and detection wavelength of 240 nm. Result: The method was stable without interference. The linear range of MTZ, OTT and QDS was 0. 044). 80 mg.ml-1 (r=0. 999 9) ,0. 024). 40mg·ml-1 (r =0. 999 9) and 0. 02-0. 40 mg·ml-1 (r =0. 999 9) with average recovery of 99. 94% (RSD =0.07% ) ,99. 85% (RSD =0. 09% ) and 98. 16 (RSD = 1.58% ) (n =6) ,respeetively. Conclusion: The method is simple and suitable for the content determination of Diqiangling capsules.
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