系数倍率法同时测定复方磺胺甲噁唑片中磺胺甲噁唑和甲氧苄啶的含量  

Determination of sulfamethoxazole and trimethoprim in Compound Sulfamethoxazole tablets by K-ratio method

作　　者：罗兰[1] 赖光超[1] 曾常青[1] 

机构地区：[1]广东药学院中药学院,广州510006

出　　处：《海峡药学》2010年第9期33-35,共3页Strait Pharmaceutical Journal

摘　　要：目的建立复方磺胺甲噁唑片中磺胺甲噁唑(SMZ)和甲氧苄啶(TMP)的含量测定方法。方法采用系数倍率法,分别在235nm和257nm处测定吸光度,从而测定复方磺胺甲噁唑片中SMZ和TMP的含量。结果 SMZ的线性范围为6～16μg.mL-1(r=0.9994),平均回收率为98.07%,RSD为0.65%(n=6);TMP的线性范围为1.2～3.2μg.mL-1(r=0.9987),平均回收率为98.91%,RSD为0.66%(n=6)。结论该法简便易行、重现性好、结果可靠,可用于该制剂的质量控制。OBJECTIVE To establish K-ratio method for the content of sulfamethoxazole（SMZ）and trimethoprim（TMP）in Compound Sulfamethoxazole Tablets.METHODS K-ratio method was used to determine the content.The samples were determined at 235nm and 257nm.RESULTS The linear range for SMZ was 6～16μg·mL-1（r=0.9994）,the recovery rate was 98.07%,RSD=0.65%（n=6）;The linear range for TMP was 1.2～3.2μg·mL-1（r=0.9987）,the recovery rate was 98.91%,RSD=0.66%（n=6）.CONCLUSION This methods is easy-to-handle with good accuracy and reproducibility,and is suitable for the quality control of Compound Sulfamethoxazole Tablets.

关 键 词：系数倍率法 磺胺甲噁唑 甲氧苄啶 

分 类 号：R927.2[医药卫生—药学]