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An Approach to the Electroanalysis of Electrode Passivating Analytes: The Determination of Phenol
Author(s) -
Wang Yuanzhe,
Compton Richard G
Publication year - 2020
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202000924
Subject(s) - electrode , pyrolytic carbon , phenol , cyclic voltammetry , fouling , voltammetry , linear sweep voltammetry , chemistry , chemically modified electrode , inorganic chemistry , materials science , analytical chemistry (journal) , working electrode , chromatography , electrolyte , organic chemistry , electrochemistry , membrane , pyrolysis , biochemistry
Abstract The electrode‐passivating species, phenol, was electrochemically determined by using semicircular sweep voltammetry on a basal‐plane pyrolytic graphite (BPPG) electrode. The electrode fouling caused by the polymerization of phenol was prevented at low concentrations by introducing a second species, 4‐amino‐2,6‐dichlorophenol (PAP), to prevent the polymerization of phenol in the vicinity of the electrode surface. Semicircular sweep voltammetry was used to amplify the analytical signal, realizing the detection of phenol in the concentration range of 25–800 μM without problems of electrode fouling.