Chemical Research in Chinese Universities ›› 2019, Vol. 35 ›› Issue (4): 577-580.doi: 10.1007/s40242-019-9098-1

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Nitrogen-doped Carbon Dots: Application of Hg Ions Detection in Rannasangpei

WU Lili1,3, LIU Huirong1,2, LIU Tonghua1,3, LI Caolong1,2   

  1. 1. Tibetan Medicine Research Institute, Tibetan Traditional Medical College, Tibet 850000, P. R. China;
    2. School of Basic Science, China Pharmaceutical University, Nanjing 211198, P. R. China;
    3. Beijing University of Chinese Medicine, Beijing 100029, P. R. China
  • Received:2019-04-04 Revised:2019-05-01 Online:2019-08-01 Published:2019-08-01
  • Contact: LIU Tonghua, LI Caolong E-mail:licl@cpu.edu.cn;thliu@vip.163.com
  • Supported by:
    Supported by the Project of Regional Collaborative Innovation Center of Tibetan Medicine in Tibet Traditional Medical College, China(No.2017XTCX018).

Abstract: Nitrogen-doped carbon dots(N-CDs) were hydrothermally synthesized by folic acid, which revealed excited wavelength-dependent blue emission and the specific recognition of Hg ions by fluorescence quenching. A wide range response and a fitted linear relationship for Hg ions detection were established to show that these blue-emission N-CDs achieved a satisfying Hg ions detection in Chinese traditional herb, Rannasangpei(RSNP). The results from the N-CDs FL quenching gave the similar outcomes with those from ICP-OES measurement, which exhibited the possibility of the simple FL method of Hg ions detection by N-CDs in Chinese traditional herbs.

Key words: Nitrogen-doped carbon dot, Rannasangpei, Hg ions detection, Fluorescence quenching, Chinese traditional herb