کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1254287 | 971368 | 2016 | 6 صفحه PDF | دانلود رایگان |
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 surface methodology. The results revealed that there was no significant difference between two methods of optimization. The linear range was 1–2500 μmol L−1 (Ip = 0.11CLH + 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 μmol 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.
Nano-CuO modified carbon paste electrode was successfully applied for square wave voltammetric determination of lidocaine.Figure optionsDownload as PowerPoint slide
Journal: Chinese Chemical Letters - Volume 27, Issue 6, June 2016, Pages 837–842