| 铬铁矿中亚铁的测定方法 |
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| 引用本文： | 杨林,黄宝贵,陈述. 铬铁矿中亚铁的测定方法[J]. 岩矿测试, 2010, 29(6): 719-722 |
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| 作者姓名： | 杨林 黄宝贵 陈述 |
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| 作者单位： | 长沙矿冶研究院, 湖南 长沙 410012;长沙矿冶研究院, 湖南 长沙 410012;长沙矿冶研究院, 湖南 长沙 410012 |
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| 基金项目： | 国家质检总局2008年科技计划项目(2008IK049);横向委托项目资助(HW0019) |
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| 摘 要： | 采用硫-磷混合酸微波消解对难溶的钒钛磁铁矿进行前处理,用5-溴-PADAP-过氧化氢分光光度法测定矿样中的钒,优化了微波消解的实验条件。加入浓磷酸和40 g/L氟化钠溶液分别消除了共存常量元素铁和钛的干扰。方法检出限为0.004μg/mL,线性范围为0.01~1.0μg/mL。应用于实际钒钛磁铁矿样品中钒的测定,重现性好,检出限较低,灵敏度较高,能够满足简单、快速、批量分析的要求。
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| 关 键 词： | 微波消解 分光光度法 钒钛磁铁矿 钒 |
| 收稿时间： | 2009-12-22 |
| 修稿时间： | 2010-04-30 |
Determination of Ferrous in Chromite Ores |
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| YANG Lin,HUANG Bao-gui and CHEN Shu. Determination of Ferrous in Chromite Ores[J]. Rock and Mineral Analysis, 2010, 29(6): 719-722 |
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| Authors: | YANG Lin HUANG Bao-gui CHEN Shu |
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| Affiliation: | Changsha Research Institute of Mining & Metallugy, Changsha 410012, China;Changsha Research Institute of Mining & Metallugy, Changsha 410012, China;Changsha Research Institute of Mining & Metallugy, Changsha 410012, China |
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| Abstract: | A method for the determination of ferrous in chromite ores was developed. Based on the verification and screening tests for the original methods in literatures and studying on the dissolution-assistant effect of Li2SO4 (as a hydrotropy agent) and its reaction mechanism, two dissolution systems of H2SO4-H3PO4-V2O5-V2O5-Li2SO4 and H2SO4-H3PO4-Ce(SO4)2-Li2SO4 were introduced. The improved methods have been applied to the determination ferrous in chromite samples with satisfactory results. |
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| Keywords: | chromite ferrous lithium sulfate |
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