voltammetric determination of meclizine hcl and its application in pharmaceuticals and biological fluid using cnts/zno nano-carbon modified electrode

In this article, we report a methodology for the voltammetric behavior of meclizine hydrochloride at different nano modified electrodes e.g., glassy carbon (gce), pencil graphite (pge), carbon nano tubes-carbon paste (cnts-cpe) and carbon nano tubes-zinc oxide carbon paste (cnts/zno-cpe) using cyclic and square wave voltammetry and the highest performance of them was cpe/cnts/zno electrode and therefore was used as working electrode. the oxidation reaction mechanism of meclizine hydrochloride (mec-hcl) is proposed to be one electron system. the results obtained with a square wave were linear over the concentration ranges 19.5–102.4 ng ml−1 with a correlation coefficient 0.998. the square wave technique showed a low of detectable (lod) of 6.444 ng/ml and a limit of quantification (loq) of 19.530 ng/ml at cnts/zno-cpe. based on these findings, a simple and not time-consuming method was used for the analysis of mec-hcl in pharmaceutics and biological fluids. the method showed a minimum detectability (lod) of 0.02, 0.008 and 0.14 lg/ml and a limit of quantitation (loq) of 0.06, 0.02 and 0.42 lg/ml at pge, cpe and gce, respectively. the method was validated and compared with the reference valid method. it revealed good accuracy and reproducible results. the anticipated voltammetric procedure has the advantage of being simple, precise, inexpensive and highly sensitive.