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| 原子荧光光度法测定茶树叶基准物中砷含量的不确定度评定 | |
| 引用本文： | 刘晓慧,殷帅,杨智,易爱纯,刘世坤,张顺芝.原子荧光光度法测定茶树叶基准物中砷含量的不确定度评定[J].中南药学,2011,9(1):14-17. |
| 作者姓名： | 刘晓慧 殷帅 杨智 易爱纯 刘世坤 张顺芝 |
| 作者单位： | 1. 长沙市第一医院,长沙,410005 2. 湖南省药品检验所,长沙,410001 3. 湖南师范大学医学院,长沙,410006 4. 中南大学湘雅三医院药剂科,长沙,410013 |
| 摘 要： | 目的分析原子荧光光度法测定茶树叶基准物中砷含量的不确定度。方法通过建立数学模型,找出影响不确定度的因素,并对各个不确定度因素进行评估、计算,由此计算合成不确定度,最终给出测量结果的扩展不确定度和置信水平。结果合成不确定度为0.008,扩展不确定度为0.016,砷含量为(0.176±0.016)mg.kg-1。结论本方法可用于原子荧光光度法测定茶树叶基准物中砷含量的不确定度的分析。 |
| 关 键 词： | 不确定度 原子荧光光度法 砷 |
Uncertainty in measurement of arsenic content in tea primary standard by atomic fluorescence spectrometry |
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| LIU Xiao-hui,YIN Shuai,YANG Zhi,YI Ai-chun,LIU Shi-kun,ZHANG Shun-zhi.Uncertainty in measurement of arsenic content in tea primary standard by atomic fluorescence spectrometry[J].Central South Pharmacy,2011,9(1):14-17. | |
| Authors: | LIU Xiao-hui YIN Shuai YANG Zhi YI Ai-chun LIU Shi-kun ZHANG Shun-zhi |
| Institution: | LIU Xiao-hui1,YIN Shuai2,YANG Zhi3,YI Ai-chun1,LIU Shi-kun4,ZHANG Shun-zhi1(1.First Hospital of Changsha,Changsha 410005,2.Hunan Provincial Institute for Drug Control,Changsha 410001,3.Medical College of Hunan Normal University,Changsha 410006,4.Department of Pharmacy,Third Xiangya Hospital,Central South University,Changsha 410013) |
| Abstract: | Objective To analyze the uncertainty involved in atomic fluorescence spectrometry method for the determination of arsenic in tea primary standard.Methods HPLC determination mathematical model was established to deduce the factor affecting the uncertainty.Each component of uncertainty was evaluated and calculated,from which the combined uncertainty and finally the extended uncertainty and confidence level were obtained.Results The combined uncertainty was 0.008,extended uncertainty was 0.016,and the content ... |
| Keywords: | uncertainty atomic fluorescence spectrometry method arsenic |
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