Electroanalytical method for determination of phenols

摘要

The electroanalytical method for determination of phenols is a method for determining the concentration of phenolic compounds and their chloro-derivatives, on the surface of a glassy carbon electrode (GCE) by cyclic voltammetry (CV) and/or square-wave stripping voltammetry (SWASV) using a redox active polymer film that is formed on the surface of the GCE when the electro-polymerization potential is reached. The electroanalytical method comprises contacting an aqueous sample containing a phenolic compound(s) with an electrode assembly having a working electrode; generating a voltammogram of the analyte by varying an applied accumulation potential or applied potential, and measuring the size of voltammogram peaks corresponding to a redox-active polymeric film that develops at the working electrode at the electro-polymerization potential in order to determine the concentration of the phenolic compound.

主权项

1. An electroanalytical method for determination of phenols, comprising the steps of:
contacting an aqueous sample of a phenolic compound with an electrode assembly having a working electrode; determining a response of the working electrode in a voltammogram by varying a potential applied to the working electrode, wherein the potential applied to the working electrode is an accumulation potential during a square-wave adsorptive stripping voltammetry measurement, the square-wave adsorptive stripping voltammetry measurement being conductive at a pulse amplitude of 25 mV with a pulse width of 8 mV and at a frequency of 15 Hz; measuring the size of peaks in the voltammogram corresponding to a redox-active polyphenol film that develops at the working electrode at an electro-polymerization potential of the phenolic compound in order to determine the concentration of the phenolic compound.