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呋喃西林在银颗粒与石墨粉复合电极上的电分析

Electroanalysis of nirofurazone at silver particles and graphite powder composite electrode.

作者信息

Zoubir J, Assabbane A, Bakas I

机构信息

Team of Catalysis and Environment Ibn Zohr University Faculty of Sciences, BP 8106 Agadir, Morocco.

出版信息

Carbon Lett (Korean Carbon Soc). 2022;32(3):767-780. doi: 10.1007/s42823-021-00307-5. Epub 2021 Dec 2.

Abstract

The main objective of the research was to deposit thin films of silver on a graphite carbon paste in a phosphate buffer medium using an electrochemical method. To construct a nitrofurazone detection sensor that is highly sensitive. Different manufacturing parameters, such as electrodeposition potential, pH effect, potential scan rate effect, and number of scan cycles, were examined in this section. The parameters were optimized to improve the deposited silver layers various electrocatalytic characteristics. The Nitrofurazone reduction process is diffusion controlled, as seen by the linear variation of Epc with log(v). The constructed Ag-NPs@CPE electrod has excellent electrical characteristics a large active surface area and low background with extremely high electrical conductivity, according to structural and electrochemical characterizations such as Scanning electron microscopy, X-ray diffraction (XRD) and cyclic voltammetry. The constructed sensor has a very remarkable analytical performance for nitrofurazone molecule identification, with a very low detection limit of about 10 M. The detection of nitrofurazone using our Ag-NPs@CPE sensors in real samples contaminated with the antibiotic nitrofurazone, such as tap water and urine. In the selected sample, the electroanalytical findings reveal a very satisfactory recovery rate of more than 94 percent.

摘要

该研究的主要目的是在磷酸盐缓冲介质中,采用电化学方法在石墨碳糊上沉积银薄膜。以构建高灵敏度的呋喃西林检测传感器。在本节中研究了不同的制造参数,如电沉积电位、pH值影响、电位扫描速率影响和扫描循环次数。对这些参数进行了优化,以改善沉积银层的各种电催化特性。从Epc与log(v)的线性变化可以看出,呋喃西林的还原过程受扩散控制。根据扫描电子显微镜、X射线衍射(XRD)和循环伏安法等结构和电化学表征,构建的Ag-NPs@CPE电极具有优异的电学特性、大的活性表面积、低背景和极高的电导率。所构建的传感器对呋喃西林分子识别具有非常显著的分析性能,检测限极低,约为10 M。使用我们的Ag-NPs@CPE传感器对受抗生素呋喃西林污染的实际样品(如自来水和尿液)中的呋喃西林进行检测。在所选样品中,电分析结果显示回收率非常令人满意,超过94%。

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[Determination of nitrofurazone in livestock products and seafoods by liquid chromatography-tandem mass spectrometry].
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