| 高氯酸镁吸收重量法测定铁矿石中结晶水的含量 |
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| 引用本文： | 曾波,张强,吴迎红,涂昀.高氯酸镁吸收重量法测定铁矿石中结晶水的含量[J].化学分析计量,2012,21(5):62-64. |
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| 作者姓名： | 曾波 张强 吴迎红 涂昀 |
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| 作者单位： | 江西新余钢铁股份有限公司检测中心,江西新余,338028 |
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| 摘 要： | 建立了铁矿石中结晶水含量的测定方法.利用铁矿石中结晶水高温分解的特性,采用高纯氩气为载气,试样在1 000℃管式炉中加热,结晶水随载气逸出,由装有无水高氯酸镁的吸收管吸收后称量,计算出铁矿石中结晶水的含量.测定结果的相对标准偏差(RSD)小于3％(n=6),加标回收率在95％～ 104％之间.
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| 关 键 词： | 铁矿石 无水高氯酸镁 结晶水 吸收管 重量法 |
Determination of Crystal Water in Iron Ore by Magnesium Perchlorate Gravimetric Method |
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| Zeng Bo
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Zhang Qiang
,
Wu Yinghong
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Tu Yun.Determination of Crystal Water in Iron Ore by Magnesium Perchlorate Gravimetric Method[J].Chemical Analysis And Meterage,2012,21(5):62-64. |
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| Authors: | Zeng Bo Zhang Qiang Wu Yinghong Tu Yun |
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| Institution: | (Test Centre,Xingyu Iron and Steel Co.,Ltd.,Xinyu 338028,China) |
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| Abstract: | The method for determination of crystal water content in iron ore was established. By the characteristic of crystal water＇ s decomposition at higher temperature, high purity argon carrier gas was used, and the sample was heated at 1 000℃ in tube furnace, crystal water vapor got out with carrier gas. After the water vapor out from tube furnace was absorbed by magnesium perchlorate in a absorption tube, the tube was weighed, and the crystal water content in iron ore was calculated. RSD of the determination results was less than 3%（n=6）, and the recovery was 95% -104%. |
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| Keywords: | iron ore magnesium perchlorate crystal water absorption of tube gravimetric method |
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