A New Fluorescence Quenching Method for the Determination of Trace ClO2 in Water Using Silver Nanoparticles
KANG Cai-yan1，2,CHEN Yuan-yuan1,JIANG Zhi-liang1*,XI Dan-li2
1. Department of Resource and Environmental Science, Guangxi Normal University, Guilin 541004, China 2. School of Environmental Science and Engineering, Donghua University, Shanghai 200051, China
Abstract：In pH 9.1 NH4Cl-NH3·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 0.001 1-0.185 μg·mL-1. The detection limit is 0.004 7 μg·mL-1. A new fluorescence method has been proposed for the determination of ClO2in water samples with satisfactory results.
康彩艳1，2,陈媛媛1,蒋治良1*,奚旦立2 . 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(06): 1096-1098.
KANG Cai-yan1，2,CHEN Yuan-yuan1,JIANG Zhi-liang1*,XI Dan-li2 . A New Fluorescence Quenching Method for the Determination of Trace ClO2 in Water Using Silver Nanoparticles . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(06): 1096-1098.
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