| 镁矿石中钙镁的快速连续测定 |
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| 引用本文： | 栾日坚,丁梅清.镁矿石中钙镁的快速连续测定[J].岩矿测试,1999,20(2):139-141145. |
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| 作者姓名： | 栾日坚 丁梅清 |
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| 作者单位： | 山东地质勘查局潍坊测试中心,潍坊,261021 |
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| 摘 要： | 在一份ｐＨ１０的氨缓冲溶液中，分别用乙二醇二乙醚二胺四乙酸和环己二胺四乙酸连续滴定Ｃａ和Ｍｇ。方法用于镁矿石中Ｃａ和Ｍｇ的测定。结果与标准值和外检结果一致。测定镁矿石中ＣａＯ和ＭｇＯ１２次的ＲＳＤ分别为〈５％和〈０．３０％。
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| 关 键 词： | 连续滴定 镁矿石 钙 镁 |
Fast Continuous Determination of Calcium and Magnesium in Magnesium Ores |
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| LUAN Ri-jian,DING Mei-qing.Fast Continuous Determination of Calcium and Magnesium in Magnesium Ores[J].Rock and Mineral Analysis,1999,20(2):139-141145. |
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| Authors: | LUAN Ri-jian DING Mei-qing |
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| Abstract: | A method for continuous titration of calcium and magnesium in ammonia buffer solution at pH=10 with ethylene glycol bis (aminoethyl) ether N,N,N,Ntetraacetic acid (EGTA) and 1,2cyclohexane diamimne tetraacetic acid (CyDTA) was developed. The method has been applied to the determination of Ca and Mg in magnesium ores. The results are in good agreement with certified values and those provided by other methods with precision (n=12) of <5% RSD for CaO and <0.3% RSD for MgO.\=\= |
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| Keywords: | continuous titration magnesium ore calcium magnesium |
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