| 铬铁矿中三氧化二铬测定结果不确定度的评定 |
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| 引用本文： | 王生进,张宗恩.铬铁矿中三氧化二铬测定结果不确定度的评定[J].化学研究,2011,22(4):72-76,83. |
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| 作者姓名： | 王生进 张宗恩 |
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| 作者单位： | 河北省地矿局第十一地质大队邢台实验室,河北邢台,054000 |
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| 摘 要： | 讨论了影响铬铁矿中三氧化二铬测定结果不确定度的各种因素,并评定了地质样品中三氧化二铬测定结果的不确定度.结果表明,采用硫酸亚铁铵溶液滴定方法,当样品三氧化二铬的含量为43.78％时,其扩展不确定度U=0.32％.
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| 关 键 词： | 铬铁矿 三氧化二铬 测定 不确定度 |
Uncertainty evaluation in determining chromium oxide of chromite |
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| WANG Sheng-jin,ZHANG Zong-en.Uncertainty evaluation in determining chromium oxide of chromite[J].Chemical Research,2011,22(4):72-76,83. |
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| Authors: | WANG Sheng-jin ZHANG Zong-en |
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| Institution: | WANG Sheng-jin,ZHANG Zong-en(Xingtai Laboratory of Geological Team 11,Hebei Bureau of Geology and Mineral Resources,Xingtai 054000,Hebei,China) |
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| Abstract: | The factors impacting the uncertainty in the measurement results of Cr2O3 in chromite samples were discussed,and the uncertainty of determination was evaluated.It was found that,when ferrous ammonium sulfate titration method was used to determine Cr2O3 in chromite samples,an expanded uncertainty of 0.32% was recorded at Cr2O3 concentration of 43.78%. |
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| Keywords: | chromite chromium oxide determination uncertainty |
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