Simple and rapid electrochemical determination of endosulfan in vegetables by polyaniline/Fe-ZnO nanocomposite-modified glassy carbon electrode

IF 2.6 4区化学 Q3 ELECTROCHEMISTRY Journal of Solid State Electrochemistry Pub Date : 2024-08-09 DOI:10.1007/s10008-024-06041-y

Toleshi Teshome, Abera Gure, Shimeles Addisu Kitte, Guta Gonfa

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Abstract

Endosulfan is an organochlorine pesticide widely used in agriculture to protect crops such as cotton, soybeans, coffee, tea, cereals, fruits, vegetables, and grains from pests. However, exposure to low concentrations of endosulfan causes harmful effects on humans’ health. Therefore, the determination of endosulfan in food samples by a fast, simple, and cost-effective method is pivotal. In this study, an electrochemical sensor based on a polyaniline/Fe-ZnO-modified glassy carbon electrode (PANI/Fe-ZnO/GCE) was developed for the determination of endosulfan in vegetables. The synthesized nanomaterials were characterized by Fourier transform infrared (FT-IR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). PANI/Fe-ZnO/GCE showed remarkable electrocatalytic activity for the determination of endosulfan in vegetables. It also exhibited a good linear response to endosulfan concentrations ranging from 1 to 400 µM. The method displayed a low detection limit (LOD) of 0.003 µM. The sensor showed good selectivity, long-term stability, good repeatability, and within-lab reproducibility. It was also applied for the determination of endosulfan in tomatoes and potatoes, with acceptable recoveries ranging from 87.00 to 96.80%.

Graphical abstract

Graphical illustration of PANI/Fe-ZnO modified glassy carbon electrode for endosulfan determination in vegetables

Abstract Image

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聚苯胺/铁-氧化锌纳米复合材料修饰的玻璃碳电极简单快速地电化学测定蔬菜中的硫丹含量

硫丹是一种有机氯杀虫剂，广泛用于农业领域，以保护棉花、大豆、咖啡、茶叶、谷物、水果、蔬菜和谷物等农作物免受害虫侵害。然而，接触低浓度的硫丹会对人体健康造成危害。因此，采用快速、简单、经济有效的方法测定食品样品中的硫丹含量至关重要。本研究开发了一种基于聚苯胺/Fe-ZnO修饰的玻璃碳电极（PANI/Fe-ZnO/GCE）的电化学传感器，用于测定蔬菜中的硫丹。傅立叶变换红外（FT-IR）、X 射线衍射（XRD）和扫描电子显微镜（SEM）对合成的纳米材料进行了表征。在测定蔬菜中硫丹含量时，PANI/Fe-ZnO/GCE表现出了显著的电催化活性。此外，它还对 1 至 400 µM 的硫丹浓度表现出良好的线性响应。该方法的检测限（LOD）低至 0.003 µM。该传感器具有良好的选择性、长期稳定性、重复性和实验室内重现性。该方法还被用于测定番茄和马铃薯中的硫丹，回收率在 87.00% 至 96.80% 之间。

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来源期刊

Journal of Solid State Electrochemistry 工程技术-电化学

CiteScore

4.80

自引率

4.00%

发文量

227

审稿时长

4.1 months

期刊介绍： The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry. The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces. The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis. The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.