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Citation: HUANG Ting-Ting, ZOU Li-Ling, LAI Xue-Wan, HUANG Hao, ZHANG Shi-Chao, GUO Jia-Qing, WENG Wen. Fabrication of Nitrogen-doped Carbon Nanoparticles and Application in Detection of Free Chlorine[J]. Chinese Journal of Analytical Chemistry, ;2017, 45(2): 199-204. doi: 10.11895/j.issn.0253-3820.160563 shu

Fabrication of Nitrogen-doped Carbon Nanoparticles and Application in Detection of Free Chlorine

College of Chemistry and Environment, Minnan Normal University, Zhangzhou 363000, China

Received Date: 23 July 2016
Revised Date: 6 November 2016

Nitrogen-doped carbon nanoparticles (N-CNPs) with a fluorescence quantum yield of 15.1% were prepared from sucrose and urea in oleic acid medium by a one-pot solvothermal method. A new approach for quick, sensitive, and selective determination of free chlorine in water was developed based on fluorescence quenching of N-CNPs. There existed a good linear correlation between the fluorescence quenching and the concentration of ClO^- in the range of 0.05-25.00 μmol/L. The limit of detection (LOD, S/N=3) was estimated to be 23 nmol/L. This method can be applied to the determination of free chlorine in real water samples.
- Nitrogen-doped carbon nanoparticles,
- Sucrose,
- Urea,
- Fluorescence quenching,
- Free chlorine
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