Modified Graphite Paste Electrode with Lewatit FO36 Nanoresin/Multi-Walled Carbon Nanotubes for Determination of Quercetin
- Authors: Noroozifar M.1, Rajabi H.1
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Affiliations:
- Analytical Research Laboratory, Department of Chemistry
- Issue: Vol 54, No 3 (2018)
- Pages: 234-242
- Section: Article
- URL: https://journals.rcsi.science/1023-1935/article/view/189276
- DOI: https://doi.org/10.1134/S1023193518030084
- ID: 189276
Cite item
Abstract
In the present study, the electrochemical oxidation of quercetin (QUR) was investigated using a graphite paste electrode (GPE) modified with multi-walled carbon nanotube and Lewatit FO36 nanoresin (LFONR-MWCNT/GPE). LFONR-MWCNT/GPE could effectively a sensitive anodic peak at around 0.23 V (vs. SCE) in a 0.10 M phosphate buffer solution. Modified electrode revealed that activated with multiwalled carbon nanotube and LFONR was capable of facilitating electron transfer and increasing surface area. The electrochemical oxidation of QUR was studied using cyclic voltammetry (CV) and linear sweep voltammetry (LSV). Some kinetic parameters for electrochemical oxidation of QUR including total number of electrons (n) and standard heterogeneous rate constant (ks) were also determined. The calibration graph consisted of two linear segments of 1.8–25.0 μM, and 25.0–570.0 μM with a detection limit of 0.213 μM (based on 3Sb). The applicability of the method to juice of peach, red grape, sour cherry and Gincora tablets analysis was also evaluated.
About the authors
Meissam Noroozifar
Analytical Research Laboratory, Department of Chemistry
Email: h_rajabi8086@yahoo.com
Iran, Islamic Republic of, Zahedan
Hossein Rajabi
Analytical Research Laboratory, Department of Chemistry
Author for correspondence.
Email: h_rajabi8086@yahoo.com
Iran, Islamic Republic of, Zahedan