Fabrication of Poly (Evans Blue) Modified Graphite Paste Electrode as an Electrochemical sensor for Sensitive and Instant Riboflavin Detection

IF 2.4 Q3 CHEMISTRY, MULTIDISCIPLINARY

Moroccan Journal of Chemistry Pub Date : 2021-02-14 DOI:10.48317/IMIST.PRSM/MORJCHEM-V9I1.18239

M. M. Charithra, J. G. Manjunatha

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引用次数: 5

Abstract

Electro-analysis of Riboflavin (RN) consumed as vitamin has been delved by constructing the poly (Evans Blue) modified graphite paste electrode (PEBMGPE) as an electrochemical detector. Voltammetric determination of RN in 0.2 M PBS (pH 7.0) at the electro-active layer of the PEBMGPE was conducted. The PEBMGPE plays a crucial role as sensing tool towards the detection of RN compared to the BGPE. The topographical features of the bare graphite paste electrode (BGPE) and PEBMGPE was acquired by the FESEM surface analysis. All experimental factors such as applied potential, the effect of scan rate, impact of the pH were optimized. Employing the Differential pulse voltammetry (DPV) approaches using the good experimental circumstances the analytical curve was linear in the range of 6×10 -6 -1.5×10 -4 M, the detection limit and limit of quantification gained as 2.1×10 -7 M and 7.1×10-7 M, respectively. Subsequently, good repeatability, excellent reproducibility, and adequate stability, high sensitivity were achieved for the PEBMGPE sensor. In addition, the PEBMGPE sensor was applied for the interference study of RN with Dopamine (DA) and Paracetamol (PR). Besides the practicability of the projected sensor was successfully utilized for the detection of the RN in the pharmaceutical formulations

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用于灵敏快速检测核黄素的电化学传感器——聚（伊文思蓝）改性石墨糊电极的制备

通过构建聚（埃文斯蓝）改性石墨糊电极（PEBMGPE）作为电化学检测器，对作为维生素消耗的核黄素（RN）进行了电化学分析。在PEBMGPE的电活性层，在0.2M PBS（pH 7.0）中进行RN的伏安测定。与BGPE相比，PEBMGPE作为检测RN的传感工具发挥着至关重要的作用。通过FESEM表面分析获得了裸石墨糊电极（BGPE）和PEBMGPE的形貌特征。对施加电势、扫描速率的影响、pH值的影响等实验因素进行了优化。采用微分脉冲伏安法，在良好的实验条件下，分析曲线在6×10-6-1.5×10-4M范围内呈线性，检测限和定量限分别为2.1×10-7M和7.1×10-7M。随后，PEBMGPE传感器实现了良好的重复性、优异的再现性以及足够的稳定性和高灵敏度。此外，将PEBMGPE传感器应用于RN与多巴胺（DA）和对乙酰氨基酚（PR）的干扰研究。此外，投影传感器的实用性已成功用于检测药物配方中的RN

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来源期刊

Moroccan Journal of Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

3.40

自引率

9.10%

发文量