| Fluorescence determination of europium with pyridine-2,4,6-tricarboxylic acid |
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| 引用本文： | ZHAOJun ZHAOGuohu LIANGHuiguang ZHANGHaobo. Fluorescence determination of europium with pyridine-2,4,6-tricarboxylic acid[J]. 稀有金属(英文版), 2005, 24(2): 115-118 |
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| 作者姓名： | ZHAOJun ZHAOGuohu LIANGHuiguang ZHANGHaobo |
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| 作者单位： | CollegeofScience,GansuAgriculturalUniversity,Lanzhou730070,China |
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| 基金项目： | This project was financially supported by the Natural Science Foundation of Gansu Province, China (ZR-97-21). |
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| 摘 要： | Europium can form a stable chelate with pyridine-2,4,6-tricarboxylic acid (PTA) with a ratio of 1:1 in aqueous. The system, having the maximum excitation and emission wavelengths at 311.0 nm and 616.3 nm, separately, shows a constant fluorescence intensity in the pH range of 11.0-12.0. The method has high selectivity and sensitivity as well as low effect from foreign ions. The optimum determinate conditions were obtained. The fluorescence intensity is a linear function of Eu^3 concentration in the range of 0.0029-1.5200 μg.mL^-1 and the limit of detection is 2.90 ng.mL^-1.
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| 关 键 词： | 铕 嘧啶-2 4 6-三羟酸 荧光测定 发光性 鳌合物 |
Fluorescence determination of europium with pyridine-2,4,6-tricarboxylic acid |
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| ZHAO Jun,Zhao Guohu,LIANG Huiguang,ZHANG Haobo. Fluorescence determination of europium with pyridine-2,4,6-tricarboxylic acid[J]. Rare Metals, 2005, 24(2): 115-118 |
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| Authors: | ZHAO Jun Zhao Guohu LIANG Huiguang ZHANG Haobo |
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| Affiliation: | College of Science, Gansu Agricultural University, Lanzhou 730070, China |
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| Abstract: | Europium can form a stable chelate with pyridine-2,4,6-tricarboxylic acid (PTA) with a ratio of 1:1 in aqueous.The system, having the maximum excitation and emission wavelengths at 311.0 nm and 616.3 nm, separately, shows a constant fluorescence intensity in the pH range of 11.0-12.0. The method has high selectivity and sensitivity as well as low effect from foreign ions. The optimum determinate conditions were obtained. The fluorescence intensity is a linear function of Eu3+ concentration in the rage of 0.0029-1.5200 μg·mL-1 and the limit of detection is 2.90 ng.mL-1. |
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| Keywords: | fluorescent determination europium pyridine-2 4 6-tricarboxylic acid luminescence |
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