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Determination of several catechols on bare and polymer coated glassy carbon electrode
Author(s) -
Heiduschka Peter,
Dittrich Jürgen
Publication year - 1992
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140040213
Subject(s) - ascorbic acid , catechol , cyclic voltammetry , differential pulse voltammetry , glassy carbon , electrode , coating , polymer , electrochemistry , voltammetry , chemistry , inorganic chemistry , materials science , polymer chemistry , organic chemistry , food science
Glassy carbon electrodes were coated with a copolymer of styrene and maleic acid anhydride. The voltammetric behavior of catechol, ascorbic acid, dopamine, and DOPAC was examined at both bare and coated electrode using cyclic voltammetry and modified differential pulse voltammetry. Electrochemical pretreatment increased peak current of catechol and its derivatives; the polymer coating caused significant decrease of peak currents and shift of peak potentials. The signal of ascorbic acid is greatly suppressed, while that of DOPAC disappears even after polymer coating.