An Electrochemical Sensor Based on Au Nanoparticles for Rapid Determination of Nitrofurazone in Aquaculture Seawater

IF 0.8 4区工程技术 Q4 ELECTROCHEMISTRY

Russian Journal of Electrochemistry Pub Date : 2025-08-07 DOI:10.1134/S1023193524601712

Yunxia He, Jianlei Chen, Tianruo Zhang, Yang Liu, Qingkui Wang, Keming Qu, Zhengguo Cui

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引用次数: 0

Abstract

We have developed an electrochemical sensor for the rapid detection of nitrofurazone (NFZ) in aquaculture seawater, utilizing a glassy carbon electrode (GCE) modified with Au nanoparticles (AuNPs). Compared to the unmodified electrode, the modified electrode exhibited higher electrocatalytic activity than the GCE and could be used efficiently for the detection of NFZ. It was found that the AuNPs modified electrode exhibited a higher specific surface area, as determined by scanning electron microscopy characterization. The effects of various parameters, including the number of electrodeposition cycles for modified electrode preparation and the pH of the electrolyte for NFZ detection were optimized. Under optimized experimental conditions, the peak current and concentration of NFZ exhibited a linear relationship in the range of 3 to 100 μM when analyzed using square wave voltammetry (SWV), with a limit of detection of 0.24 μM. The proposed sensor was successfully utilized for the detection of NFZ in aquaculture seawater. The spiked recoveries ranged from 96.35 to 107% (RSD < 4.13%), indicating that the method demonstrates satisfactory accuracy and performance for detecting NFZ in real seawater.

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基于金纳米粒子的电化学传感器快速测定水产养殖海水中硝基呋喃酮

我们开发了一种用于水产养殖海水中硝基呋喃酮（NFZ）快速检测的电化学传感器，该传感器利用了金纳米颗粒修饰的玻碳电极（GCE）。与未修饰电极相比，修饰电极表现出比GCE更高的电催化活性，可以有效地用于检测NFZ。通过扫描电镜表征发现，AuNPs修饰电极具有更高的比表面积。优化了修饰电极制备的电沉积循环次数和检测NFZ的电解液pH等参数的影响。在优化的实验条件下，方波伏安法（SWV）在3 ~ 100 μM范围内检测到NFZ的峰值电流与浓度呈线性关系，检测限为0.24 μM。该传感器已成功用于水产养殖海水中NFZ的检测。加标回收率为96.35% ~ 107% (RSD < 4.13%)，表明该方法对实际海水中NFZ的检测具有良好的准确性和性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Russian Journal of Electrochemistry 工程技术-电化学

CiteScore

1.90

自引率

8.30%

发文量

102

审稿时长

6 months

期刊介绍： Russian Journal of Electrochemistry is a journal that covers all aspects of research in modern electrochemistry. The journal welcomes submissions in English or Russian regardless of country and nationality of authors.