Voltammetric Determination of Epinephrine and Uric Acid using Modified Graphene Oxide Nano Sheets Paste Electrode
- Authors: Sayed Zia Mohammadi 1, Beitollahi H.2, Rahimi N.M.1
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Affiliations:
- Department of Chemistry, Payame Noor University
- Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology
- Issue: Vol 74, No 4 (2019)
- Pages: 345-354
- Section: Articles
- URL: https://journals.rcsi.science/1061-9348/article/view/183187
- DOI: https://doi.org/10.1134/S1061934819040117
- ID: 183187
Cite item
Abstract
A carbon paste electrode was prepared and modified with 3-(4'-amino-3'-hydroxy-biphenyl-4-yl)-acrylic acid and graphene nanosheets. In phosphate buffer solution, the modified electrode showed an excellent electrocatalytic effect on the oxidation of epinephrine. This was further used to determine epinephrine in the presence of uric acid by square wave voltammetry. The oxidation peak current showed a linear relationship with the concentration of epinephrine in the range of 1.0 × 10–7 to 5.0 × 10–5 M, with the detection limit of 5 × 10–8 M. The method has high sensitivity, selectivity, stability, and has been successfully applied to determining epinephrine and uric acid in real samples.
About the authors
Sayed Zia Mohammadi
Department of Chemistry, Payame Noor University
Author for correspondence.
Email: szmohammadi@yahoo.com
Iran, Islamic Republic of, Tehran
Hadi Beitollahi
Environment Department, Institute of Science and High Technology and Environmental Sciences,Graduate University of Advanced Technology
Email: szmohammadi@yahoo.com
Iran, Islamic Republic of, Kerman
Nasrin Mohammad Rahimi
Department of Chemistry, Payame Noor University
Email: szmohammadi@yahoo.com
Iran, Islamic Republic of, Tehran