{"title":"Determination of Vitamin C at Modified Screen Printed Electrode: Application for Sensing of Vitamin C in Real Samples","authors":"Fatemeh Shayanfar, Hamid Sarhadi","doi":"10.3103/S1068375521040141","DOIUrl":null,"url":null,"abstract":"<p>In this study, ZnFe<sub>2</sub>O<sub>4</sub> 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.</p>","PeriodicalId":49315,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"57 4","pages":"487 - 494"},"PeriodicalIF":1.1000,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Surface Engineering and Applied Electrochemistry","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.3103/S1068375521040141","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
引用次数: 2
Abstract
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.
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.
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