| 邻菲咯啉荧光熄灭法测定铜 |
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| 引用本文： | 赛音,李强.邻菲咯啉荧光熄灭法测定铜[J].光谱学与光谱分析,2002,22(6):1070-1071. |
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| 作者姓名： | 赛音 李强 |
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| 作者单位： | 内蒙古大学化学化工学院,内蒙古,呼和浩特,010021 |
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| 摘 要： | 研究了在pH 6 2 5～ 7 5 5KH2 PO4 Na2 HPO4 缓冲介质中 ,铜与邻菲咯啉形成配合物而使荧光熄灭的实验条件 ,建立了荧光熄灭法测定微量铜的新方法。该方法的λex =2 6 6nm ,λem =36 8nm ,铜含量在 8～ 30 0ng·mL- 1 范围内 ,有良好的线性关系 ,相关系数r=0 9996 ,检出下限为 10 4ng·mL- 1 。用本法经巯基棉分离测定了环境水样中的微量铜。
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| 关 键 词： | 测定 铜 邻菲咯啉 荧光熄灭法 显色剂 环境水样 微量分析 |
| 文章编号： | 1000-0593(2002)06-1070-02 |
| 修稿时间： | 2001年6月7日 |
Determination of Trace Copper Based on the Fluorescence Quenching of Phenanthroline |
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| Yin Sai,Qiang Li.Determination of Trace Copper Based on the Fluorescence Quenching of Phenanthroline[J].Spectroscopy and Spectral Analysis,2002,22(6):1070-1071. |
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| Authors: | Yin Sai Qiang Li |
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| Institution: | College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China. |
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| Abstract: | A fluorescence quenching method for the determination of trace Cu (II) was developed. The method was based on the fluorescence quenching effect of phenanthroline due to the formation of a non-fluorescent complex in pH 6.25-7.55 KH2PO4-Na2HPO4 medium. The excitation and emission wavelengths are 266 and 368 nm, respectively. The linear range is 8-300 ng.mL-1 and the detection limit is 10.4 ng.mL-1. The method has been satisfactorily used to determine trace amounts of Cu (II) in standard environmental water samples with sulfhydryl cotton separation. |
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| Keywords: | Copper Fluorescence quenching method Phenanthroline |
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