壳聚糖@FeO纳米粒子修饰的丝网印刷石墨烯基电极在水培液和果汁中亚硝酸盐和抗坏血酸同时分析中的应用

Application of Chitosan@FeO Nanoparticle-Modified Screen-Printed Graphene-Based Electrode for Simultaneous Analysis of Nitrite and Ascorbic Acid in Hydroponics and Fruit Juice.

作者信息

Pitakrut Sudarut, Sanchayanukun Phetlada, Karuwan Chanpen, Muncharoen Sasithorn

机构信息

Department of Chemistry, Faculty of Science, Burapha University, Chonburi 20130, Thailand.

National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand.

出版信息

Sensors (Basel). 2025 Feb 26;25(5):1431. doi: 10.3390/s25051431.

In this work, the development of screen-printed electrodes modified with chitosan-coated magnetite nanoparticles (CTS@FeO/SPGNE) for the simultaneous determination of nitrite (NO) and ascorbic acid (AA) is presented. The study investigated various ratios of graphene to chitosan-coated magnetite nanoparticles (CTS@FeO), as well as the optimal pH. These factors were examined due to their impact on the selectivity and sensitivity of the analysis. The results indicated that a graphene paste to CTS@FeO ratio of 16:1.0 g and a pH of 4 were optimal for the analysis of both NO and AA. Additionally, the behavior of the proposed electrode, its analytical performance, and interference studies were thoroughly examined. Furthermore, the CTS@FeO/SPGNE electrode shows potential for the simultaneous determination of NO and AA in hydroponics and fruit juice samples.