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| 银纳米微粒荧光猝灭法测定水中痕量ClO2 | |
| 引用本文： | 康彩艳,陈媛媛,蒋治良,奚旦立.银纳米微粒荧光猝灭法测定水中痕量ClO2[J].光谱学与光谱分析,2006,26(6):1096-1098. |
| 作者姓名： | 康彩艳 陈媛媛 蒋治良 奚旦立 |
| 作者单位： | 1. 广西师范大学资源与环境学系,广西,桂林,541004;东华大学环境科学与工程学院,上海,200051 2. 广西师范大学资源与环境学系,广西,桂林,541004 3. 东华大学环境科学与工程学院,上海,200051 |
| 基金项目： | 广西新世纪十百千人才工程基金 , 广西高校百名中青年学科带头人科研项目 |
| 摘 要： | 在pH 9.1的NH4Cl-NH3·H2O缓冲溶液中,银纳米微粒在470 nm处产生一个荧光峰;它能被ClO2氧化导致体系的荧光发生猝灭.ClO2浓度在0.001 1～0.185μg·mL-1范围内与荧光猝灭强度成良好的线性关系,检测限为0.004 7μg·mL-1 ClO2.据此建立了测定ClO2的荧光分析新方法,用于饮用水中ClO2的测定,结果满意. |
| 关 键 词： | ClO2 银纳米微粒 荧光法 |
| 文章编号： | 1000-0593（2006）06-1096-03 |
| 收稿时间： | 2005-03-06 |
| 修稿时间： | 2005-06-06 |
A New Fluorescence Quenching Method for the Determination of Trace ClO2 in Water Using Silver Nanoparticles |
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| KANG Cai-yan,CHEN Yuan-yuan,JIANG Zhi-liang,XI Dan-li.A New Fluorescence Quenching Method for the Determination of Trace ClO2 in Water Using Silver Nanoparticles[J].Spectroscopy and Spectral Analysis,2006,26(6):1096-1098. | |
| Authors: | KANG Cai-yan CHEN Yuan-yuan JIANG Zhi-liang XI Dan-li |
| Institution: | Department of Resource and Environmental Science, Guangxi Normal University, Guilin, China. |
| Abstract: | In pH 9.1 NH4Cl-NH3 x H2O buffer solution, there is a fluorescence peak at 470 nm for silver nanoparticles. A fluorescence quenching takes place when it was oxidized by ClO2. The intensity of fluorescence quenching is linear with the concentration of ClO2 in the range of 0.0011-0.185 microg x mL(-1). The detection limit is 0.004 7 microg x mL(-1). A new fluorescence method has been proposed for the determination of ClO2 in water samples with satisfactory results. |
| Keywords: | ClO2 Silver nanoparticles Fluorescence method |
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