Voltammetric Studies of Dyes and their Role as Carbon Electrode Modifiers

Synthetic dyes are very commonly seen in commercial products nowadays. Synthetic dyes are commonly used to give a variety of colors and shades in several commercial products. The occurrence of synthetic dyes in water after certain levels can significantly affect living beings by causing toxicity and mutagenicity. Electroanalytical methods can detect these dyes with high sensitivity and selectivity. It is also interesting to note that, commercial dyes like calmagite, rhodamine, Congo red, and many more have shown significant applications as electrode modifiers. In the current chapter, we are going to discuss the use of electrochemical methods to sense commercial dyes and applications of dye-modified carbon paste electrodes in the voltammetric analysis.