| 精密度试验中的数据处理 |
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| 引用本文： | 徐本平.精密度试验中的数据处理[J].冶金分析,2013,33(11):74-78. |
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| 作者姓名： | 徐本平 |
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| 作者单位： | 1.攀钢集团攀枝花钢铁研究院有限公司，四川攀枝花617000；2.国家钒钛制品质量监督检验中心，四川攀枝花617000；3.钒钛资源综合利用国家重点实验室，四川攀枝花617000 |
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| 摘 要： | 严格按照GB/T6379.2—2004标准，组织了多家实验室用硫酸铁铵滴定法检测铁矿石中TiO2的精密度试验，采用了曼德尔、科克伦、格拉布斯和狄克逊检验法对数据的一致性和离群值进行了检查，并借助EXCEL的计算工具对精密度试验数据进行了统计计算，确定了分析方法的精密度的函数关系式。用重复性r和再现性R真实、客观地反映了所用分析方法的实验室内和实验室间精度。
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| 关 键 词： | 精密度试验 统计计算 重复性 再现性 滴定法 |
| 收稿时间： | 2013-11-28 |
Data processing in the precision test |
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| XU Ben-ping.Data processing in the precision test[J].Metallurgical Analysis,2013,33(11):74-78. |
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| Authors: | XU Ben-ping |
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| Affiliation: | 1. Pangang Group Panzhihua Iron Steel Research Institute Co.,Ltd.,Panzhihua 617000,China;2. National Quality Supervision and Testing Center of Vanadium and Titanium Products,Panzhihua 617000,China;3. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Panzhihua 617000,China |
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| Abstract: | In strict accordance with the GB/T6379.2-2004 standard,a number of laboratories were coordinated to conduct precision tests for the determination of TiO2 in iron ore by ferric ammonium sulfate titrimetry. The data consistency and outliers were investigated with Mandel,Cochran,Grubbs and Dixon test methods,and the precision test data underwent statistical calculations with the EXCEL calculation tool to determine the functional relationship of precision for the analytical method. With repeatability r and reproducibility R,the inner-laboratory and inter-laboratory precision of the analytical method were truthfully and objectively reflected. |
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| Keywords: | precision test statistical calculation repeatability reproducibility titrimetry |
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