| 合金中微量铈的分光光度法测定 |
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| 引用本文： | 罗重庆 谭玉丽. 合金中微量铈的分光光度法测定[J]. 稀有金属与硬质合金, 1995, 0(2): 24-27 |
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| 作者姓名： | 罗重庆 谭玉丽 |
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| 作者单位： | 中南工业大学化学系 |
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| 摘 要： | 提出一种简便、快速测定合金中微量铈的分析方法。在ｐＨ２～３的介质中，以偶氮氯膦－ｍｓ显色，λｍａｘ＝６４４ｎｍ，ε＝４．７６×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，铈的含量在０～２５μｇ／２５ｍＬ范围符合比耳定律，大量镁、锰等不干扰。此法已成功地用于镁锰合金试样分析。
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| 关 键 词： | 铈 镁合金 分光光度法 微量分析 |
Determination of Trace Cerium in Alloy by Spectrophotometry |
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| Luo Chongqing,Tan Yuli,Fan Jian. Determination of Trace Cerium in Alloy by Spectrophotometry[J]. Rare Metals and Cemented Carbides, 1995, 0(2): 24-27 |
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| Authors: | Luo Chongqing Tan Yuli Fan Jian |
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| Abstract: | A simple and rapid spectrophotometric method for the determination of trace cerium in alloy has been deyeloped. Cerium reactswith chlorphosphonazo-ms to form a blue complex at PH 2-3 .The complexexhibits a maximum absorption at 664urn with an apparent molar absorptivity of 4.76X 10'Lmol-loin-1.Beer's law is obeyed for 0-25pg of Ce in25ml of solution.The method bas been applied to the determination ofcerium in alloy magnesium. |
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| Keywords: | cerium chlorphosphonazo-ms alloy magnesium spectrophotometry |
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