期刊
FRONTIERS IN CHEMISTRY
卷 8, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fchem.2020.592538
关键词
electrochemical sensor; zinc oxide; ascorbic acid; dopamine; uric acid
资金
- Technology Innovation Fund for Small and Medium-sized Enterprises of Science and Technology of Shanghai Science and Technology Commission [1301H195000]
ZnO nanoparticles (NPs) were synthesized using a hydrothermal method. Scanning electron microscope (SEM) and X-ray diffraction have been used for characterizing the synthesized ZnO NPs. An electrochemical sensor was fabricated using ZnO NPs-modified glassy carbon electrode for simultaneous determination of ascorbic acid (AA), dopamine (DA), and uric acid (UA). The proposed electrochemical sensor exhibited excellent detection performance toward three analytes, demonstrating that it can potentially be applied in clinical applications. The results indicated the ZnO NPs-modified electrode can detect AA in the concentrations range between 50 and 1,000 mu M. The ZnO NPs-modified electrode can detect DA in the concentrations range between 2 and 150 mu M. The ZnO NPs-modified electrode can detect UA in the concentrations range between 0.2 and 150 mu M. The limits of detections of AA, DA, and UA using ZnO NPs-modified electrode were calculated to be 18.4, 0.75, and 0.11 mu M, respectively.
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