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Application of Chitosan@Fe 3 O 4 Nanoparticle-Modified Screen-Printed Graphene-Based Electrode for Simultaneous Analysis of Nitrite and Ascorbic Acid in Hydroponics and Fruit Juice
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Application of Chitosan@Fe 3 O 4 Nanoparticle-Modified Screen-Printed Graphene-Based Electrode for Simultaneous Analysis of Nitrite and Ascorbic Acid in Hydroponics and Fruit Juice
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Application of Chitosan@Fe 3 O 4 Nanoparticle-Modified Screen-Printed Graphene-Based Electrode for Simultaneous Analysis of Nitrite and Ascorbic Acid in Hydroponics and Fruit Juice
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Journal Article
Application of Chitosan@Fe 3 O 4 Nanoparticle-Modified Screen-Printed Graphene-Based Electrode for Simultaneous Analysis of Nitrite and Ascorbic Acid in Hydroponics and Fruit Juice
2025
Overview
In this work, the development of screen-printed electrodes modified with chitosan-coated magnetite nanoparticles (CTS@Fe
O
/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@Fe
O
), 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@Fe
O
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@Fe
O
/SPGNE electrode shows potential for the simultaneous determination of NO
and AA
in hydroponics and fruit juice samples.
