Work

Application of Chitosan@Fe3O4 Nanoparticle-Modified Screen-Printed Graphene-Based Electrode for Simultaneous Analysis of Nitrite and Ascorbic Acid in Hydroponics and Fruit Juice

Year: 2025

Type: article

Abstract: In this work, the development of screen-printed electrodes modified with chitosan-coated magnetite nanoparticles (CTS@Fe3O4/SPGNE) for the simultaneous determination of nitrite (NO2−) and ascorbic acid (AA−) is presented. The study investigated various ratios of graphene to chitosan-coated magnetite nanoparticles (CTS@Fe3O4), 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@Fe3O4 ratio of 16:1.0 g and a pH of 4 were optimal for the analysis of both NO2− and AA−. Additionally, the behavior of the proposed electrode, its analytical performance, and interference studies were thoroughly examined. Furthermore, the CTS@Fe3O4/SPGNE electrode shows potential for the simultaneous determination of NO2− and AA− in hydroponics and fruit juice samples.

Source: Sensors

DOI: 10.3390/s25051431

Authors: Sudarut Pitakrut, Phetlada Sanchayanukun, Chanpen Karuwan, Sasithorn Muncharoen

Institutions: Burapha University, National Science and Technology Development Agency, National Nanotechnology Center

Language: English

Topic: Electrochemical sensors and biosensors

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,137

Funder: Burapha University