| 还原-偶氮光度法测定废水中硝基苯的不确定度评估 |
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| 引用本文： | 许伟,周俊,周晓惠,臧雯雯,胡佩. 还原-偶氮光度法测定废水中硝基苯的不确定度评估[J]. 四川环境, 2011, 30(1): 45-47 |
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| 作者姓名： | 许伟 周俊 周晓惠 臧雯雯 胡佩 |
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| 作者单位： | 1. 江苏省东台市环境监测站,江苏东台,224200
2. 四川师范大学化学与材料学院,成都,610066 |
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| 摘 要： | 以还原-偶氮光度法测定了废水中硝基苯的浓度,分析了测量过程中4个主要部分的不确定度。样品中硝基苯的浓度为0.500μg/mL,取包含因子k=2（95%置信概率）,扩展不确定度为U=0.032μg/mL,结果可表示为：（0.500±0.032）μg/mL。此方法测定硝基苯的不确定度的评析,有利于更准确地表示测量结果。
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| 关 键 词： | 不确定度 硝基苯 还原-偶氮光度法 |
Evaluating Uncertainty of Determining Nitrobenzene in Wastewater by Reduction Azo-photometry |
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| XU Wei,ZHOU Jun,ZHOU Xiao-hui,ZANG Wen-wen,HU Pei. Evaluating Uncertainty of Determining Nitrobenzene in Wastewater by Reduction Azo-photometry[J]. Sichuan Environment, 2011, 30(1): 45-47 |
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| Authors: | XU Wei ZHOU Jun ZHOU Xiao-hui ZANG Wen-wen HU Pei |
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| Affiliation: | XU Wei1,ZHOU Jun1,ZHOU Xiao-hui1,ZANG Wen-wen1,HU Pei2(1.Dongtai Environmental Monitoring Station in Jiangsu Province,Dongtai,Jiangsu 224200,China,2.College of Chemistry & Materials Science,Sichuan Normal University,Chengdu 610066,China) |
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| Abstract: | Nitrobenzene concentration in wastewater was determined by reduction azo-photometry and the uncertainties of four primary parts of the determination process were analyzed.When the concentration of nitrobenzene was 0.500μg/mL and let the coverage factor k=2（confidence probability was 95%）,the extended uncertainty U=0.032μg/mL.The result could be shown as Cnitrobenzene =（0.500±0.032）μg/mL.The uncertainty determined in this way could be more accurately. |
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| Keywords: | Uncertainty nitrobenzene reduction azo-hotometry |
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