| 恒电流电解-BCO分光光度法测定纯铜中铜含量不确定度的评定 |
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| 引用本文： | 马冲先,曹宏燕,钱芳华.恒电流电解-BCO分光光度法测定纯铜中铜含量不确定度的评定[J].化学分析计量,2011,20(1):11-14. |
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| 作者姓名： | 马冲先 曹宏燕 钱芳华 |
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| 作者单位： | 1. 上海材料研究所检测中心,上海,200437
2. 武汉钢铁(集团)公司技术中心,武汉,430080 |
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| 摘 要： | 对采用恒电流电解-BC0分光光度法测定纯铜中铜含量的不确定度进行了评定.对测量重复性、电解重量法、光度法等影响测量结果的不确定度分量进行了分析和量化.当纯铜中铜的质量分数为99.93%时,扩展不确定度为0.01%,k=2.
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| 关 键 词： | 不确定度 纯铜 恒电流电解 分光光度法 |
UNCERTAINTY OF DETERMINATION OF COPPER IN PURE COPPER BY ELECTROLYTIC-SPECTROPHOTOMETRIC METHOD |
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| Ma Chongxian,Cao Hongyan,Qian Fanghua.UNCERTAINTY OF DETERMINATION OF COPPER IN PURE COPPER BY ELECTROLYTIC-SPECTROPHOTOMETRIC METHOD[J].Chemical Analysis And Meterage,2011,20(1):11-14. |
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| Authors: | Ma Chongxian Cao Hongyan Qian Fanghua |
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| Institution: | Ma Chongxian1,Cao Hongyan2,Qian Fanghua1 [1.Testing Center,Shanghai Research Institute of Materials,Shanghai200437,China,2.Technology Center,Wuhan Iron & Steel(Group) Company,Wuhan430080,China] |
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| Abstract: | The uncertainty of measurement was evaluated for the determination of copper in pure copper by electrolytic-spectrophotometric method.The uncertainty components of the measurement results,including repeatability of measurement results,electrolytic method and spectrophotometry were analyzed and quantified.The expanded uncertainty of measurement result was 0.01%(k=2) as the copper mass fraction in pure copper was 99.93%. |
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| Keywords: | uncertainty pure copper electrolysis at constant current spectrophotometry |
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