Sulfonated Polyaniline Coated Mercury Film Electrodes for Voltammetric Analysis of Metals in Water

The electrochemical polymerization of 2-aminobenzenesulfonic acid with and without aniline has been carried by cyclic potencial sweep in sulfuric acid solution at the glassy carbon electrode. The polymer and copolymer formed have been characterized voltammetrically. The sulfonated polyaniline coated...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2001-11, Vol.1 (6), p.206-214
Main Author: Fungaro, Denise Alves
Format: Article
Language:English
Subjects:
Carbon
Coal-fired power plants
Electrodes
Electrolytes
Electrons
Electropolymerization
Mercury
Metals
Oxidation
Polymer films
Polymerization
Polymers
Sensors
Sulfonated polyaniline
Sulfuric acid
Trace metal analysis
Voltammetry
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Summary:The electrochemical polymerization of 2-aminobenzenesulfonic acid with and without aniline has been carried by cyclic potencial sweep in sulfuric acid solution at the glassy carbon electrode. The polymer and copolymer formed have been characterized voltammetrically. The sulfonated polyaniline coated mercury thin-film electrodes have been evaluated for use with anodic stripping voltammetry. The electrodes were tested and compared with a conventional thin-film mercury electrode. Calibration plots showed linearity up to 10-7 mol L-1. Detection limits for zinc, lead and cadmium test species are very similar at around 12 nmol L-1. Applications to analysis of waters samples are demonstrated.
ISSN:1424-8220
1424-8220
DOI:10.3390/s10600206