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IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis Pub Date : 2025-03-03 DOI:10.1007/s12678-025-00936-8

Hanieh Ghanbari, Mansour Arab Chamjangali, Mohammad Faraji

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引用次数: 0

摘要

利用基于聚日落黄和多壁碳纳米管的电化学传感器，对三种合成添加剂染料（芒硝 4R（PON）、其异构体苋菜红（AMA）和酒石酸（TAR））进行了同步电化学测定。在这项工作中，日落黄是通过一种新型电聚合工艺聚合而成的。场发射扫描电子显微镜（FESEM）显示，多壁碳纳米管表面覆盖着日落黄聚合物层。传感器的电化学活性通过电化学阻抗谱（EIS）、循环伏安法（CV）和时变法得到了验证。在优化的实验条件下，使用差分脉冲伏安法（DPV）对 PON、AMA 和 TAR 进行了电化学测定。结果显示，PON、AMA 和 TAR 的检出限（LOD）分别为 0.11、0.21 和 0.12 µM，线性范围为 0.50-30.0 µM。通过测定果冻糖、果冻和自来水中的 PON、AMA 和 TAR，证明了所开发传感器在实际样品中的常规分析能力。

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Voltammetric Sensor for Simultaneous Determination of Ponceau 4R, Amaranth, and Tartrazine as Additives in Foodstuffs

Simultaneous electrochemical determination of three synthetic additive dyes (ponceau 4R (PON), its isomer amaranth (AMA), and tartrazine (TAR)) was performed with an electrochemical sensor based on a poly-sunset yellow and multi-walled carbon nanotube. In this work, sunset yellow was polymerized with a novel electropolymerization process. Field Emission Scanning Electron Microscopy (FESEM) demonstrates that the surface of the MWCNTs is covered with the sunset yellow polymer layer. The electrochemical activity of the sensor was verified by electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and chronoamperometry. Under the optimized experimental conditions, the electrochemical determination of the PON, AMA, and TAR was carried out using differential-pulse voltammetry (DPV). The results showed low detection limits (LOD) of 0.11, 0.21, and 0.12 µM for PON, AMA, and TAR, respectively, with a linear range of 0.50–30.0 µM. The capability of the developed sensor for routine analysis of the real samples was demonstrated by the determination of PON, the AMA, and TAR in jelly-belly candy, jelly, and tap water.

Graphical Abstract

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来源期刊

Electrocatalysis CHEMISTRY, PHYSICAL-ELECTROCHEMISTRY

CiteScore

4.80

自引率

6.50%

发文量

审稿时长

>12 weeks

期刊介绍： Electrocatalysis is cross-disciplinary in nature, and attracts the interest of chemists, physicists, biochemists, surface and materials scientists, and engineers. Electrocatalysis provides the unique international forum solely dedicated to the exchange of novel ideas in electrocatalysis for academic, government, and industrial researchers. Quick publication of new results, concepts, and inventions made involving Electrocatalysis stimulates scientific discoveries and breakthroughs, promotes the scientific and engineering concepts that are critical to the development of novel electrochemical technologies. Electrocatalysis publishes original submissions in the form of letters, research papers, review articles, book reviews, and educational papers. Letters are preliminary reports that communicate new and important findings. Regular research papers are complete reports of new results, and their analysis and discussion. Review articles critically and constructively examine development in areas of electrocatalysis that are of broad interest and importance. Educational papers discuss important concepts whose understanding is vital to advances in theoretical and experimental aspects of electrochemical reactions.