TITLE

Carbon Paste Electrode Modified with Carbon Nanotubes and Poly(3-Aminophenol) for Voltammetric Determination of Paracetamol

AUTHOR(S)
Noviandri, Indra; Rakhmana, Rien
PUB. DATE
May 2012
SOURCE
International Journal of Electrochemical Science;2012, Vol. 7 Issue 5, p4479
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this research, carbon paste electrode (CPE) was modified with carbon nanotube (CNT) and poly(3-aminophenol) and the modified electrode was used for voltammetric determination of paracetamol. The CNT used to modify CPE was synthesized using spray pyrolysis technique and characterized using Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and Energy Dispersive X-Ray (EDX) techniques. Modification of CPE was conducted firstly by dispersing CNT on the surface of CPE from its N,N-Dimethil fomamide (DMF) suspension and then CNT was trapped in poly(3-aminophenol) through electropolymerization of 3-aminophenol on the surface of CPE. Characterization of the modified electrode was conducted with squarewave voltammetry (SWV) technique. Oxidation peak of paracetamol was 450 mV vs Ag/AgCl(3 M NaCl). Oxidation current of paracetamol obtained with the modified CPE was significantly higher than that obtained with bare CPE. The best calibration curve for paracetamol was in the concentration range of 10-5 M -- 10-4 M with limit of detection (3σ) of 1,1 μM. Results of paracetamol determination in real sample with the modified electrode were in good agreement with those of HPLC method.
ACCESSION #
76108670

 

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