Electrochemical behavior of Co(II) polymer-modified glassy carbon electrode for the determination of dopamine

IF 2.6 4区化学 Q3 ELECTROCHEMISTRY Journal of Solid State Electrochemistry Pub Date : 2024-08-19 DOI:10.1007/s10008-024-06045-8

Nives Vladislavić, Ivana Škugor Rončević, Marijo Buzuk, Josipa Dugeč

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Abstract

A new electrochemical sensor for the highly sensitive and selective determination of dopamine was developed, based on the use of a glassy carbon electrode modified with cobalt(II) polymer. Both electrochemical and morphological characterizations were investigated. Square wave voltammetry (SWV) was used for the determination of dopamine. From the SWV results obtained on the modified electrode under the optimized conditions, the successive addition of dopamine increased the anodic peak current. The results obtained show a linear response of the electrode modified with Co(II) polymer in a wide concentration range. Each concentration decade is characterized by a new calibration plot with a corresponding mathematical expression. The highest sensitivity (13.182) was obtained for the lowest concentration range, and the detection limit of 0.03 µM, calculated based on the 3 × s_b/m criterion, indicates a very high sensitivity and great application potential. When analyzing a real sample, the modified electrode showed good electroanalytical activities in terms of oxidation of dopamine, good anti-interference ability, stability, reproducibility, and potential applicability in commercial pharmaceutical samples.

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测定多巴胺的 Co(II) 聚合物改性玻璃碳电极的电化学行为

基于使用钴（II）聚合物修饰的玻璃碳电极，开发了一种用于高灵敏度和高选择性测定多巴胺的新型电化学传感器。对电化学和形态特征进行了研究。多巴胺的测定采用了方波伏安法（SWV）。从改性电极在优化条件下获得的 SWV 结果来看，多巴胺的连续添加增加了阳极峰值电流。结果表明，用 Co(II) 聚合物修饰的电极在很宽的浓度范围内呈线性响应。每个浓度十年都有一个新的校准图和相应的数学表达式。最低浓度范围的灵敏度最高（13.182），根据 3 × sb/m 标准计算的检测限为 0.03 µM，这表明该电极具有极高的灵敏度和巨大的应用潜力。在分析实际样品时，改性电极在多巴胺氧化方面表现出良好的电分析活性、良好的抗干扰能力、稳定性和重现性，以及在商业药品样品中的潜在适用性。

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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.