双波长法测定溴咖合剂中咖啡因的含量  

Determination of Caffeine in Xiuka Mixture by Dual-wavelength Spectrometry

作　　者：张茂[1] 

机构地区：[1]四川省宜宾市第一人民医院药剂科,宜宾644000

出　　处：《中国药师》2004年第3期189-190,共2页China Pharmacist

摘　　要：目的 :建立溴咖合剂中咖啡因的含量检测方法。方法 :采用双波长法 ,以 2 71.8nm作测定波长 ,2 4 5 .7nm作参比波长 ,测定吸收度△A ,计算得咖啡因的含量。结果 :咖啡因平均回收率为 99.9% ,RSD为 0 .8%。结论 :该方法简便 ,准确 ,可直接用于溴咖合剂中咖啡因的含量测定。Objective: To establish a method for determining the content of caffeine in Xiuka mixture.Method: A dual-wavelength spectrometry was used. The detecting wavelength and the reference wavelength of caffeine were 271.8 nm and 245.70 nm, respectively. Result: The average recovery was 99.9%, RSD was 0.8%(n=9). Conclusion: The method was simple, rapid, and accurate.

关 键 词：分光光度法 双波长咖啡因 羟苯乙酯 溴咖合剂 

分 类 号：R927.2[医药卫生—药学]