改良丝网印刷电极测定维生素C:在实际样品中检测维生素C的应用

IF 1.1 Q4 ELECTROCHEMISTRY

Surface Engineering and Applied Electrochemistry Pub Date : 2021-09-01 DOI:10.3103/S1068375521040141

Fatemeh Shayanfar, Hamid Sarhadi

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引用次数: 2

摘要

在本研究中，使用磁性纳米ZnFe2O4修饰丝网印刷电极。改性电极降低了维生素C的过电位(70 mV)，显著提高了其氧化峰电流(3.3%)。在最佳条件下，采用差分脉冲伏安法，电极在维生素C浓度0.5 ~ 500.0 μM范围内呈线性响应，检出限为0.15 µM。该电极具有良好的线性范围和微摩尔检测限，灵敏度高，稳定性和重复性好等优良的电化学性能。通过对实际样品中维生素C浓度的定量分析，揭示了该方法的实用性。

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Determination of Vitamin C at Modified Screen Printed Electrode: Application for Sensing of Vitamin C in Real Samples

In this study, ZnFe₂O₄ magnetic nanoparticles were used to modify a screen printed electrode. The modified electrode decreased the over-potential of vitamin C (70 mV) and prominently increased its oxidation peak current (3.3%). Under optimum conditions, the electrode provided a linear response based on the vitamin C concentrations between 0.5–500.0 μM, with a detection limit of 0.15 µM, by using the differential pulse voltammetric method. The modified electrode exhibited excellent electrochemical performance, including a good linear range and a micromolar detection limit, high sensitivity, and desirable stability and repeatability. Particularly, the practical applicability was revealed by quantifying the vitamin C concentrations in real samples.

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来源期刊

Surface Engineering and Applied Electrochemistry Engineering-Industrial and Manufacturing Engineering

CiteScore

1.70

自引率

22.20%

发文量

审稿时长

6 months

期刊介绍： Surface Engineering and Applied Electrochemistry is a journal that publishes original and review articles on theory and applications of electroerosion and electrochemical methods for the treatment of materials; physical and chemical methods for the preparation of macro-, micro-, and nanomaterials and their properties; electrical processes in engineering, chemistry, and methods for the processing of biological products and food; and application electromagnetic fields in biological systems.