摘要
目的:评定以紫外分光光度法测定酚酞片含量的不确定度。方法:根据《测量不确定度评定与表示》,并参考《化学分析中不确定度的评估指南》,对酚酞片的含量测定进行测量不确定度的分析与评定。结果:扩展不确定度为1.0%,相对扩展不确定度为1.0%,含量测定结果可表示为(97.0±1.0)%。结论:严格按照操作规范,尽可能减少稀释过程影响,可有效降低引入的不确定度,保证测定结果准确。
OBJECTIVE： To evaluate the uncertainty in the determination of the content of phenolphthalein tablet by UV spectrophotometry. METHODS： The uncertainty in the determination of the content of phenolphthalein tablet was analyzed and evaluated based on＂Evaluation and Expression of Uncertainty Measurement＂and the＂Manual of Uncertainty Evaluation in Chemical Analysis＂. RESULTS： Both the expanded uncertainty U95 and the relative expanded uncertainty Urel were 1.0%. The content of phenolphthalein tablet was （97.0 ± 1.0） %. CONCLUSION： The introduced uncertainty can be effectively reduced and the determination result can be ensured by strictly following the operation standards and trying to reduce the in-fluence of the dilution process.
出处
《中国药房》
CAS
CSCD
北大核心
2007年第19期1500-1501,共2页
China Pharmacy
关键词
酚酞片
紫外分光光度法
含量
不确定度
评定
Phenolphthalein tablet
UV spectrophotometry
Content
Uncertainty
Evaluation
