| 碘量法测定水中溶解氧含量测量不确定度的评定 |
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| 引用本文： | 安卫东,陶良瑛. 碘量法测定水中溶解氧含量测量不确定度的评定[J]. 化学分析计量, 2003, 12(6): 5-7 |
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| 作者姓名： | 安卫东 陶良瑛 |
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| 作者单位： | 吉林省计量科学研究院,长春,130022;四平市环境保护监测站,四平,136000 |
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| 摘 要： | 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，对测量不确定度各个分量的评定结果表明，测量重复性的不确定度分量最大，其次是样品溶液的体积、滴定溶液的体积和滴定溶液的浓度等不确定度分量，计算得到水中溶解氧含量测定结果的合成不确定度为0．06mg/L，扩展不确定度为0．12mg/L。
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| 关 键 词： | 测量不确定度 碘量法 溶解氧 评定 |
| 修稿时间： | 2003-08-07 |
EVALUATION OF THE UNCERTAINTY OF MEASUREMENT FOR THE DETERMINATION OF DISSOLVED OXYGEN CONTENT IN WATER BY IODINIMETRIC METHOD |
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| An Weldong Tao Liangying. EVALUATION OF THE UNCERTAINTY OF MEASUREMENT FOR THE DETERMINATION OF DISSOLVED OXYGEN CONTENT IN WATER BY IODINIMETRIC METHOD[J]. Chemical Analysis And Meterage, 2003, 12(6): 5-7 |
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| Authors: | An Weldong Tao Liangying |
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| Abstract: | The influencing factors of the uncertainty of measurement in the determination of the dissolved oxygen content in 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 dissolved oxygen reported are 0. 06 mg/L and 0. 12 mg/L respectively. |
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| Keywords: | uncertainty of measurement iodinimetric method dissolved oxygen evolution |
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