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Reference type: Journal
Authors: Gürler B, Özkorucuklu SP, Kir E
Article Title: Voltammetric behavior and determination of doxycycline in pharmaceuticals at molecularly imprinted and non-imprinted overoxidized polypyrrole electrodes.
Publication date: 2013
Journal: Journal of Pharmaceutical and Biomedical Analysis
Volume: 84
Page numbers: 263-268.
DOI: 10.1016/j.jpba.2013.06.009
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0731708513002598

Abstract: In this paper, electrochemical behavior of a member of tetracycline group compounds doxycyline (DC) was investigated in 20, 30, 40% (v/v) acetonitrile (ACN)-water binary mixture at the pH of 2.0-4.0 prepared Britton-Robinson (BR) buffers, by the differential pulse voltammetric method (DPV). Voltammetric determination of DC was carried out using molecularly imprinted (MIP) and non-imprinted polypyrrole (NIP) modified electrodes. Both types of electrode were prepared by the cyclic voltammetric method. The effect of the ACN-water ratio and pH, on the performance of the MIP electrode was investigated and optimized. The highest anodic signal of DC with MIP electrode was obtained in BR buffer solution was prepared in 30% (v/v) ACN-water at pH 2.0. The detection limit was determined as 4.35 x 10-5 M (S/N = 3). The method was also applied for electrochemical determination of DC in pharmaceutical samples. The recovery factors for Tetradox® and Monodox® were found 96.30%, 61.18% respectively with the relative standard deviations 0.46 and 0.54. The results of experiments using two commercial drugs showed that the MIP electrode can be used as a sensor to determine DC in pharmaceuticals
Template and target information: doxycyline, DC
Author keywords: cyclic voltammetry, Doxycycline, molecularly imprinting, overoxidation, polypyrrole


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