Electrochemical Sensor Based on Multiwall Carbon Nanotube-Paste Electrode for Determination of Promethazine in Pharmaceutical Formulations and Blood Plasma

Document Type : Original Articles

Authors

1 Department of Chemistry, Faculty of Science, university of Qom, Qom, Iran

2 Department of medical nanotechnology, school of advanced medical sciences and technologies, Shiraz University of Medical Sciences, Shiraz, Iran; Department of chemistry Shiraz University of technology Shiraz Iran c) Nuclear Science and Technology Research Institute, P.O. Box 11365/8486, Tehran, Iran

Abstract

A multi-walled carbon nanotube modified paste electrode (MWCN-PE) was used for determination of promethazine (PMZ) in drug formulations and blood plasma by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) methods. Results revealed that the MWCN-PE shows an electrocatalytic activity toward the anodic oxidation of PMZ by a marked enhancement in the current response in buffered solution at pH 5.0.  At the MWCN/CPE, the anodic peak potential of PMZ was shifted by 28.0 mV to more negative potential in comparison with bare carbon paste electrode. The detection limit for this method was 0.025 µmol L-1. Results indicated that the modified electrode could be employed for the determination of promethazine hydrochloride in pharmaceutical formulations and plasma samples. 

Keywords

References

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Journal of Advanced Medical Sciences and Applied Technologies
Volume 1, Issue 1 - Serial Number 1
4
September 2015
Pages 61-67

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