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Updated: Jun 15, 2026

Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds
Published on: October 18, 2018
Sequential identification of organic dyes using the voltammetry of microparticles approach
Antonio Doménech-Carbó1, María Teresa Doménech-Carbó, Marina Calisti
1Departament de Química Analítica, Universitat de València, Dr. Moliner, 50, 46100 Burjassot, València, Spain. antonio.domenech@uv.es
Abstract:
An electrochemical method for identifying indigoid, anthraquinonic, naphtoquinonic, flavonoid, pyrone, pyran, and other related dyes in microsamples from works of art is reported using the voltammetry of microparticles methodology. Products of solid state oxidation/reduction of dyes form a layer on the lateral faces of the dye crystals as suggested by ATR-FTIR and AFM data. This method is based on the sequential application of oxidative and reductive constant-potential polarization steps coupled with the record of square wave voltammograms to solid microsamples of dyes in contact with aqueous electrolytes.
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