| Eu(MAA)_3Phen-CHIT用于铅离子的测定 |
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| 引用本文： | 蔡清,唐美华,张显波,唐立超,石成成,王济奎,陈国松.Eu(MAA)_3Phen-CHIT用于铅离子的测定[J].广东化工,2014(17):186-187,189. |
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| 作者姓名： | 蔡清 唐美华 张显波 唐立超 石成成 王济奎 陈国松 |
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| 作者单位： | 南京工业大学理学院 |
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| 摘 要： | 在316 nm激发波长下,痕量铅离子的引入可使铕-甲基丙烯酸(MAA)-邻菲罗啉(Phen)三元稀土配合物壳聚糖(CHIT)醋酸(HAc)溶液体系在418 nm的发射荧光产生猝灭现象。在0.5 g/LEu(MAA)3Phen-0.2%CHIT-1%HAc溶液中,随着Pb2+浓度的增大,该体系的荧光强度IF由急剧下降至渐趋稳定。Pb2+浓度在0.1~6μmol/L内,IF呈线性下降,检出限为1.1μg/L。
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| 关 键 词： | 荧光 铕 壳聚糖 甲基丙烯酸 邻菲罗啉 铅离子 |
The Application of Eu（MAA）3Phen-CHIT for the Determination of Concentrations of Lead Ions |
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| Cai Qing;Tang Meihua;Zhang Xianbo;Tang Lichao;Shi Chengcheng;Wang Jikui;Chen Guosong.The Application of Eu（MAA）3Phen-CHIT for the Determination of Concentrations of Lead Ions[J].Guangdong Chemical Industry,2014(17):186-187,189. |
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| Authors: | Cai Qing;Tang Meihua;Zhang Xianbo;Tang Lichao;Shi Chengcheng;Wang Jikui;Chen Guosong |
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| Affiliation: | Cai Qing;Tang Meihua;Zhang Xianbo;Tang Lichao;Shi Chengcheng;Wang Jikui;Chen Guosong;College of Science,Nanjing Tech University; |
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| Abstract: | The emission fluorescence of Eu-MAA-Phen in CHIT of HAc solution at 418 nm with excitation wavelength of 316 nm could be quenched by trace lead ions. In solution of 0.5 g/L Eu（MAA）3Phen-0.2 % CHIT-1% HAc, the fluorescence intensity （1F） dropped rapidly at first and then tended to be stable with the increasing concentration of Pb2＋. 1F presented a linear decline when the concentration of Pb2＋ was in the range from 0.1 to 6 μmol/L. And the detection limit of Pb2＋ was 1.1 μg/L. |
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| Keywords: | Fluorescent： Europium Chitosan： Methyacrylicacid 1 10-phenanthroline Lead ions |
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