期刊
MICROCHEMICAL JOURNAL
卷 157, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.microc.2020.104956
关键词
Carbon quantum dots; Fluorescent sensor; Myricetin
资金
- Applied Basic Research Project Fund of Shanxi Province [201901D211434]
- Higher Education Technology Innovation Project of Shanxi Province [2019L0750]
- Industry Key Research and Development Plan Project Fund of Datong City [2018014]
- Doctoral Science Research Fund of Shanxi Datong University [2016-B-13]
In this research, a novel label-free fluorescent sensor for the determination of myricetin was designed based on carbon quantum dots (CQDs). The CQDs were prepared via green and straightforward microwave-assisted heating method using aspartic acid and urea as precursors. The prepared CQDs showed strong fluorescence and good solubility in water. The sensing principle of sensor is the quenching of CQDs fluorescence by myricetin via inner filter effect (IFE). The developed CQDs sensor was sensitive to myricetin with a wide linear detection range of 1 to 80 mu M and a low limit of detection (LOD) of 18.4 nM. The potential interfering substances showed no influence on the determination of myricetin. Furthermore, the proposed sensor based on CQDs was successfully applied for the determination of myricetin in red wine samples and exhibited simple operation, low cost and high accuracy. The results indicated our developed sensor based on CQDs has great application prospects for myricetin detection in real sample analysis.
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