Electrochemical Sensing of Uric Acid Using a ZnO/Graphene Nanocomposite Modified Graphite Screen Printed Electrode
- Authors: Rezaei R.1, Foroughi M.M.1, Beitollahi H.2, Alizadeh R.3
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Affiliations:
- Department of Chemistry, Faculty of Sciences
- Environment Department, Institute of Science and High Technology and Environmental Sciences
- Department of Chemistry, Faculty of Science
- Issue: Vol 54, No 11 (2018)
- Pages: 860-866
- Section: Article
- URL: https://journals.rcsi.science/1023-1935/article/view/189574
- DOI: https://doi.org/10.1134/S1023193518130347
- ID: 189574
Cite item
Abstract
An electrochemical sensor has been fabricated using ZnO/GR nanocomposite for selective determination of uric acid (UA) in a phosphate buffer solution (PBS, pH 7.0). The electrochemical behaviour of UA at the ZnO/GR nanocomposite modified graphite screen printed electrodes (SPE) was studied by cyclic voltammetry and differential pulse voltammetry methods. The modified electrode exhibited remarkably anodic peak corresponding to the oxidation of uric acid over the concentration range of 1.0–100.0 μM with detection limit of 0.43 μM (S/N = 3). The fabricated sensor was further applied to the detection of uric acid in urine samples with good selectivity and high reproducibility.
About the authors
Rasoul Rezaei
Department of Chemistry, Faculty of Sciences
Author for correspondence.
Email: rasoul.rezaei1393@gmail.com
Iran, Islamic Republic of, Kerman
Mohammad Mehdi Foroughi
Department of Chemistry, Faculty of Sciences
Email: rasoul.rezaei1393@gmail.com
Iran, Islamic Republic of, Kerman
Hadi Beitollahi
Environment Department, Institute of Science and High Technology and Environmental Sciences
Email: rasoul.rezaei1393@gmail.com
Iran, Islamic Republic of, Kerman
Reza Alizadeh
Department of Chemistry, Faculty of Science
Email: rasoul.rezaei1393@gmail.com
Iran, Islamic Republic of, Qom