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| Naji, M. |
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| Ertürk, Emre |
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| Rančić, M. |
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| Azevedo, Nuno Monteiro |
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Nagarajappa, Hareesha
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- 2024Poly(riboflavin)/NaOH/graphene nanoplatelets modified graphite composite paste electrode for the determination of antioxidant rutincitations
- 2022Electrochemical Determination of Riboflavin using a Poly (Titan Yellow) Modified Carbon Nanotube Paste Electrode in the Presence of Dopaminecitations
- 2021Sensitive and Selective Electrochemical Detection of Vanillin at Graphene Based Poly (Methyl Orange) Modified Paste Electrodecitations
- 2021Voltammetric analysis of antihistamine drug cetirizine and paracetamol at poly(L-Leucine) layered carbon nanotube paste electrodecitations
- 2020Electrochemical Fabrication of Poly (niacin) Modified Graphite Paste Electrode and its Application for the Detection of Riboflavincitations
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article
Voltammetric analysis of antihistamine drug cetirizine and paracetamol at poly(L-Leucine) layered carbon nanotube paste electrode
Abstract
In the present effort, a highly responsive electrochemical sensor made up of a carbon nanotube paste electrode modified with a thin layer of electrochemically polymerized L-Leucine was employed for the determination of cetirizine (CTZ) in the presence of paracetamol. In contrast to bare carbon nanotube paste electrode (BCNTPE), a noticeable shift in the peak potential along with an enhancement in the peak current was observed for the electro‒oxidation of CTZ on the modified electrode surface, which can be associated to the extended microscopic active surface area of the modified electrode. The surface of both unmodified and modified electrode surfaces were characterized using field emission scanning electron microscopy (FE-SEM) and electrochemical impedance spectroscopy (EIS) studies. The influence of experimental circumstances on the response of electrode, such as number of sweeping segments in the polymerization process, accumulation potential, accumulation time, and the pH were examined. Under the optimized experimental conditions, the calibration plot was achieved in the concentration range from 5 μM to 50 μM of CTZ with a regression co-efficient of 0.996. The evaluated detection limit for CTZ was achieved as 0.17 μM. The proposed electrode and method were effectively utilized to analyze CTZ in pharmaceutical, blood serum and urine sample with a recovery of 96.49‒99.85 %.