| 吡嗪─2─羧酸─乙醇体系导数荧光法同时测定钐、铕、铽、镝 |
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| 引用本文： | 刘淑萍,黄汉国.吡嗪─2─羧酸─乙醇体系导数荧光法同时测定钐、铕、铽、镝[J].冶金分析,1996(2). |
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| 作者姓名： | 刘淑萍 黄汉国 |
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| 作者单位： | 河北理工学院化工系 |
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| 摘 要： | 研究了各种有机溶剂对Ｅｕ３＋、Ｔｂ３＋－吡嗪－２－羧酸荧光体系的增敏效应。结果发现：乙醇不仅能使Ｅｕ３＋，Ｔｂ３＋的特征荧光增敏，而且也使Ｓｍ３＋，Ｄｙ３＋的荧光增敏。在ｐＨ６．０，９９．６％乙醇浓度体系中，Ｅｕ３＋，Ｔｂ３＋的荧光强度分别提高４７和１４倍，实现了同时测定Ｓｍ３＋，Ｅｕ３＋，Ｔｂ３＋，Ｄｙ３＋四种离子。本方法已成功地应用于混合稀土氧化物中四者含量的测定。
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| 关 键 词： | 吡嗪－2－羧酸，乙醇，荧光法，钐，铕，铽，镝 |
Simultaneous Determination of Samarium, Europium, Terbium and Dysprosium by Derivative Fluorometry with Pyrazine-2-Dicarboxylic Acid- Ethanol System |
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| Liu Shuping,Huang Hanguo.Simultaneous Determination of Samarium, Europium, Terbium and Dysprosium by Derivative Fluorometry with Pyrazine-2-Dicarboxylic Acid- Ethanol System[J].Metallurgical Analysis,1996(2). |
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| Authors: | Liu Shuping Huang Hanguo |
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| Abstract: | Synergistic effect of organic solvents on Eu3 ,Tb3 - pyrazine-2-carboxylicacid (PyA) fluorescence system was studied. It is found that ethanol(EtOH)can not only enhance the fluorescent intensities of Eu3 ,Tb3 , but also enhance those of Sm3 , Dy3 . In the 99.6% EtOH solution of PH6.0, the fluorescent intensities of Eu3 , Tb3 are increased for 47 and 14 times, respectively. Utilizing the PyA-EtOH system,a method of simultaneous determination of Sm3 , Eu3 , Tb3 . Dy3 was developed and the contents of the four elements in mixed rare earth oxides were successfully determined. |
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| Keywords: | Pyrazine-2-dicarboxylicacid Ethanol Derivative fluorometry Samarium Europium Terbium Dysprosium |
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