| 水质五日生化需氧量(BOD5)测定不确定度的评定 |
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| 引用本文： | 杨红,梁景波.水质五日生化需氧量(BOD5)测定不确定度的评定[J].环境科学与管理,2006,31(2):134-135. |
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| 作者姓名： | 杨红 梁景波 |
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| 作者单位： | 淄博市环境监测站,山东,淄博,255000 |
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| 摘 要： | 水质五日生化需氧量测量的关键是用碘量法测水中溶解氧的含量,经过分析碘量法测定水中溶解氧含量测量不确定度的影响因素,认为测量的重复性的不确定度分量最大,其次是样品中溶液的体积,滴定溶液的体积和滴定溶液的浓度等不确定度分量.计算得到水中五日生化需氧量的测定结果的合成不确定度为6.4mg/L,扩展不确定度为12.8mg/L.
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| 关 键 词： | 五日生化需氧量 不确定度 评定 水质 五日生化需氧量 测定结果 不确定度的评定 Water Content Oxygen Biochemical Determination Uncertainty 扩展不确定度 合成不确定度 计算 浓度 滴定溶液 体积 样品 不确定度分量 测量不确定度 影响因素 |
| 文章编号： | 1673-1212（2006）02-0134-02 |
| 收稿时间： | 2005-11-10 |
| 修稿时间： | 2005-11-10 |
Evaluation of the Uncertainty for the Determination of the Biochemical Oxygen Demanded in Five Days Content of Water |
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| YANG Hong,LIANG Jing-bo.Evaluation of the Uncertainty for the Determination of the Biochemical Oxygen Demanded in Five Days Content of Water[J].Environmental Science and Management,2006,31(2):134-135. |
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| Authors: | YANG Hong LIANG Jing-bo |
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| Institution: | 1.2Environmental Monitoring Station of Zibo, Zibo 255000, China |
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| Abstract: | The key of the measurement for the Biochemical Oxygen Demanded in five days(BOD5) of water is the determination of Dissolved Oxygen content of water by iodinimetric method.The influencing factors of the uncertainty of measurement in the determination of the Dissolved Oxygen content of water are discussed.The components of the uncertainty of measurement are analyzed.The maximum component is the repeatability in turn,next component is the volume of sampling solution,the volume and the concentration of titrating.By calculation,the standard uncertainty and the expanded uncertainty of BOD5 are 6.4mg/L and 12.8mg/L. |
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| Keywords: | BOD5 dissolved oxygen uncertainty of measurement |
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