Work

Facile and Sensitive Electrochemical Sensing of Nitrite in Aquaculture Based on a Fe3O4/STAB/Chitosan Nanocomposite

Year: 2026

Type: article

Abstract: In this work, an electrochemical sensor based on a Fe3O4/STAB/chitosan nanocomposite was developed for the detection of nitrite. The nanocomposite exhibited positive charges on its surface, high conductivity, favorable biocompatibility, and strong antifouling ability, enabling electrostatic adsorption of nitrite and thereby enhancing detection sensitivity. A glassy carbon electrode (GCE) modified with this material was employed for nitrite measurement using differential pulse voltammetry (DPV). Under optimized conditions, the Fe3O4/STAB/chitosan/GCE showed excellent analytical performance for nitrite detection, with a detection limit of 0.151 mg/L. Recovery rates of nitrite in real samples ranged from 95.02% to 107.93%, with relative standard deviations between 0.91% and 5.23%. Moreover, the modified GCE displayed excellent selectivity, reproducibility, and repeatability for nitrite detection. Therefore, this work provides a novel strategy for nitrite monitoring in aquaculture.

Source: Nanomaterials

DOI: 10.3390/nano16140878

Authors: Qihu Dai, Song Zhang, Heng Zhang, Maosai Zhang, Gaoyou Yao

Institutions: Xinyang Agriculture and Forestry University, Henan Institute of Science and Technology

Language: English

Topic: Electrochemical sensors and biosensors

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Clean water and sanitation

Open Access status: gold

Estimated APC paid: $2,896