Citation: Nadereh Rahbar, Zahra Ramezani, Jamalaldin Ghanavati. CuO-nanoparticles modified carbon paste electrode for square wave voltammetric determination of lidocaine: Comparing classical and Box–Behnken optimization methodologies[J]. Chinese Chemical Letters, ;2016, 27(6): 837-842. doi: 10.1016/j.cclet.2016.04.017 shu

CuO-nanoparticles modified carbon paste electrode for square wave voltammetric determination of lidocaine: Comparing classical and Box–Behnken optimization methodologies

a Nanotechnology Research Center, Faculty of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran;
b Medicinal Chemistry Department, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran

Received Date: 17 August 2015
Revised Date: 25 December 2015

Fund Project: The authors are thankful for the funding provided by Jundishapur University of Medical Sciences –Nanotechnology Research Center under grant No. N-11. This paper is issued from thesis of Jamalaldin Ghanavati.

In this research, copper oxide nanoparticles modified carbon paste electrode was developed for the voltammetric determination of lidocaine. The square wave voltammogram of lidocaine solution showed a well-defined peak between +0.5 and +1.5 V. Instrumental and chemical parameters influencing voltammetric response were optimized by both one at a time and Box-Behnken model of response surfacemethodology. The results revealed that there was no significant difference between twomethods of optimization. The linear range was 1-2500 mmol L^-1(I_p = 0.11C_LH + 17.38, R² = 0.999). The LOD and LOQ based on three and ten times of the signal to noise (S/N) were 0.39 and 1.3 mmol L^-1 (n = 10), respectively. The precision of the method was assessed for 10 replicate square wave voltammetry (SWV) determinations each of 0.05, 0.5 and 1 mmol L^-1 of lidocaine showing relative standard deviations 4.1%, 3.7% and 2.1%, respectively. The reliability of the proposed method was established by application of the method for the determination of lidocaine in two pharmaceutical preparations, namely injection and gel.
- Square wave voltammetry,
- CuO nanoparticles,
- Lidocaine,
- Modified carbon paste electrode
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