Journal
ELECTROANALYSIS
Volume 25, Issue 5, Pages 1263-1270Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201200665
Keywords
Graphene; Ferrocene; Captopril; Hydrochlorothiazide; Electrocatalytic oxidation
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In this work, a voltammetric method has been developed for the simultaneous determination of captopril (CPT) and hydrochlorothiazide (HCT) in pharmaceutical combinations and clinical samples using a graphene/ferrocene composite carbon paste (GR/Fc/CP) electrode. The electrochemical behaviors of CPT and HCT were individually and simultaneously investigated at the surface of the GR/Fc/CP electrode. In differential pulse voltammetric (DPV) mode and under optimized experimental conditions, CPT and HCT gave linear responses over the concentration ranges 1.0430 mu M and 0.5390 mu M (r2>0.99), respectively. The prepared electrode could be used for simultaneous determination of CPT and HCT in some real samples.
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