发洗剂中水杨酸含量测定方法的改进  

Improved Method for the Content Determination of Salicylic Acid in Hair Lotion

作　　者：段崇英[1] 黄文倩[1] 

机构地区：[1]山东单县中心医院,单县274300

出　　处：《中国药事》2013年第10期1095-1096,共2页Chinese Pharmaceutical Affairs

摘　　要：目的改进发洗剂中水杨酸的含量测定方法。方法通过把酚酞指示剂更换为溴麝香草酚蓝指示剂,滴定终点颜色变色明显,平均加样回收率为99.6%,RSD为0.13%。结果与结论本方法操作简便、结果准确可靠、指示终点明显,可作为发洗剂中水杨酸的含量测定方法。Objective To improve the content determination method for salicylic acid in hair lotion. Methods Bromothymol blue indicator was used instead of phenolphthalein indicator. Color discoloration was obviously observed at the end point of titration. The average recovery rate was about 99.6% （RSD was about 0.13%）. Results and Conclusion The established method is simple, accurate and reliable, and the end point of titration is obvious. It can be applied for the content determination of salicylic acid in hair lotion.

关 键 词：发洗剂 水杨酸含量测定 方法改进 

分 类 号：R917[医药卫生—药物分析学]