Ag-CeO2 Based on Electrochemical Sensor for High-Efficient On-Site Detection of Nitrite in Aquaculture Water and Beverages

Nitrite is one of the most common nitrogenous compounds, which is not only an important indicator of aquaculture water but also widely used as a food additive. Its potential toxicity poses a huge threat to aquatic products and human health. Therefore, it is important to develop a convenient and rapi...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2024-06, Vol.29 (11), p.2644
Main Authors: Zhao, Kunmeng, Zhang, Ziyao, Zhou, Yihui, Lin, Xuexia
Format: Article
Language:English
Subjects:
Ag-CeO2
Aquaculture
aquaculture water
beverage testing
Carbon
Chromatography
electrochemical sensor
Electrodes
Electrons
Food
Gold
Metals
Nanomaterials
Nanoparticles
nitrite
Oxidation
Reproducibility
Sensors
Spectrum analysis
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Summary:Nitrite is one of the most common nitrogenous compounds, which is not only an important indicator of aquaculture water but also widely used as a food additive. Its potential toxicity poses a huge threat to aquatic products and human health. Therefore, it is important to develop a convenient and rapid sensor for the high-efficient onsite detection of nitrite. In this work, a novel electrochemical sensor was developed for the qualitative and quantitative analysis of nitrite. The developed nitrite electrochemical detection system is easily applied in onsite detection. The electrochemical working electrode was constructed based on the combination of Ag-CeO2 and conductive carbon paste (CPE) with excellent electrocatalysis activity and rapid electron transfer ability. By the application of the developed system and under the optimal conditions, the linear range was from 40.0 μM to 500.0 μM, and the detection limit was reduced to 4.3 μM. The recovery was between 92.1% and 108.1%, and the relative standard deviations (RSDs) were 0.49%~9.31%. The sensor exhibited superior reproducibility, high stability sensitivity, and anti-interference ability, confirming its effectiveness for nitrite analysis. Finally, the developed electrochemical sensor was successfully applied to detect nitrite in beverages and aquaculture water samples, indicating that this approach has great potential in onsite food testing and environmental monitoring.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules29112644