| 水中总硬度测定结果的不确定度评定 |
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| 引用本文： | 谢勇坚. 水中总硬度测定结果的不确定度评定[J]. 净水技术, 2005, 24(4): 63-66 |
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| 作者姓名： | 谢勇坚 |
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| 作者单位： | 广东省肇庆市自来水公司,广东,肇庆,526020 |
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| 摘 要： | 采用直观的因果图，对EDTA滴定法测定水中总硬度的不确定度的来源及其对测量不确定度的影响进行分析。建立有效的数学式，利用相对标准不确定度分量进行测量不确定度的评定，并在硬度为126mg／L的水样测定中获得其相对不确定度为0．97％。
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| 关 键 词： | EDTA滴定法 总硬度 测量不确定度 评定 |
| 收稿时间： | 2005-01-24 |
| 修稿时间： | 2005-01-24 |
Evaluation of Uncertainty in Determination of Total Hardness in Water |
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| Xie Yongjian. Evaluation of Uncertainty in Determination of Total Hardness in Water[J]. Water Purifcation Technology, 2005, 24(4): 63-66 |
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| Authors: | Xie Yongjian |
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| Abstract: | Making use of the cause and effect diagram to analyse the sources and influences of uncertainty in determination of total hardness in water by EDTA titrimetric method was introduced. The mathematical formula of the relative uncertainty was established which consists of terms of uncertainty competent and a results of relative uncertainty 0. 97% was obtained in determination of a water sample with hardness 126mg/L. |
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| Keywords: | EDTA titrimetric method total hardness uncertainty of measurement evaluation |
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