| 锅炉水总碱度测量不确定度的评估 |
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| 引用本文： | 丁红,孟昭武.锅炉水总碱度测量不确定度的评估[J].分析试验室,2006,25(8):104-107. |
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| 作者姓名： | 丁红 孟昭武 |
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| 作者单位： | 1. 广东省东莞市质量技术监督局特种设备检验所,东莞,523120
2. 国家有色金属及电子材料分析测试中心,北京,100088 |
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| 摘 要： | 对锅炉水中总碱度测量不确定度的来源进行分析，评定了总碱度测定过程中测量重复性、天平、标准物质纯度、滴定管和移液管等因素对总碱度测量不确定度的影响，计算得到炉水水样总碱度为26．00mmol／L时，扩展不确定度为0．12mmol／L。在总碱度的测量过程中，滴定管和移液管的准确度是影响总碱度测量不确定度的主要因素。
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| 关 键 词： | 炉水 总碱度 不确定度 |
| 文章编号： | 1000-0720（2006）08-104-04 |
| 收稿时间： | 04 13 2006 12:00AM |
| 修稿时间： | 2006-04-132006-05-24 |
Evaluation of uncertainty in determination of total alkalinity in boiler water |
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| DING Hong,MENG Zhao-wu.Evaluation of uncertainty in determination of total alkalinity in boiler water[J].Chinese Journal of Analysis Laboratory,2006,25(8):104-107. |
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| Authors: | DING Hong MENG Zhao-wu |
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| Institution: | 1. Dong Guan Special Equipment Inspection Department, Dongguan 523120; 2. General Research Institute for Non-ferrous Metals, Beijing 100088 |
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| Abstract: | Sources of the uncertainty of measurement in the determination of total alkalinity in boiler water was analyzed. The influencing factors on the uncertainty of measurement in the determination of total alkalinity were evaluated, including repeatability of measurement, balance, purity of standards, burette and pipette ect. An expanded uncertainty 0. 096 mmol/L is obtained in determination of a boiler water sample with a total alkalinity 26 mmol/L. In the process of the determination of the total alkalinity, accuracy of the burette and pipette is the main factor which influences the uncertainty of measurement. |
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| Keywords: | Boiler water Total alkalinity Uncertainty |
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