摘要
研究了吡嗪－２－羧酸与ＥＵ３＋、Ｔｂ３＋形成配合物的发光机理、配合比、探讨了导数荧光技术同时测定Ｅｕ３＋、Ｔｂ３＋的最佳条件和其他稀土离子共存的影响。Ｅｕ３＋、Ｔｂ３＋检测限分别达到４．７和５．４ｎｇ·ｍｌ－１，利用本方法成功地测定了稀土试样中铕、铽的含量。取得满意的结果。
the paper studies the stoichiometry and the fluorescence emitting mechanism of Eu3+,Tb3+ complex with pyrazine -2-carboxylicacid. The optimum conditions of simultaneous determination for Eu3+,Tb3+ by derivative fluorometry are established. The interference of other rare earthions is investigagaed. The detection limits of Eu3+,Tb3+are 4. 7ng/ml and 5. 4ng/ml, respectively. The method is used to determine the amount of Eu3+,Tb3+ in rare earth samples and results are satisfactory.
基金
河北省自然科学基金
关键词
导数荧光法
铕
铽
吡嗪羧酸
稀土族
Derivative fluorometry
Pyrazine- 2-carboxylicacid
Europium
Terbium
