镍铁氧体纳米颗粒修饰的丝网印刷石墨电极伏安式叶酸传感器

IF 2.9 Q2 ELECTROCHEMISTRY Journal of Electrochemical Science and Engineering Pub Date : 2022-11-30 DOI:10.5599/jese.1607

P. Mohammadzadeh Jahani, Mohammad Reza Aflatoonian

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引用次数: 1

摘要

本研究构建了生理条件下伏安法测定叶酸的电化学传感器。为此，利用镍铁氧体(NiFe2O4)纳米颗粒修饰丝网印刷石墨电极(NiFe2O4/SPGE)的表面，并将其应用于叶酸的测定。修饰电极对叶酸表现出较强的电化学响应。采用差分脉冲伏安法(DPV)测定叶酸，在pH 7.0的磷酸盐缓冲溶液(PBS)中，在0.2 ~ 147.0µM线性范围内检测限为0.09±0.001µM，该传感器具有最佳的电子传递速率。修饰电极的灵敏度为0.1139µAµM-1。成功地将NiFe2O4/SPGE传感器应用于实际样品中叶酸的测定。

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Voltammetric folic acid sensor based on nickel ferrite nanoparticles modified-screen printed graphite electrode

In this study, an electrochemical sensor for the quantification of folic acid with voltammetric detection in physiological conditions was constructed. For this purpose, nickel ferrite (NiFe2O4) nanoparticles were used to modify the surface of a screen-printed graphite electrode (NiFe2O4/SPGE) and applied in the determination of folic acid. The modified electrode displays a strong electrochemical response to folic acid. Folic acid was determined electrochemically using the differential pulse voltammetry (DPV) technique with a detection limit of 0.09±0.001 µM in 0.2–147.0 µM linear range in phosphate buffer solution (PBS) at pH 7.0 with this NiFe2O4/SPGE sensor, which has the best electron transfer rate. Also, the sensitivity of the modified electrode was obtained as 0.1139 µA µM-1. The NiFe2O4/SPGE sensor was successfully applied for the determination of folic acid in real samples.

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