Voltammetry: Fundamentals, Techniques, and Analytical Applications

This video explores the fundamentals and applications of voltammetry, an electrochemical methodology that uses current-potential curves for qualitative and quantitative analyses. The author details the evolution of polarography, highlighting the use of the mercury drop electrode and the importance of the Ilkovic equation in determining concentrations. The crucial differences between two- and three-electrode systems are examined, emphasizing how modern instrumentation optimizes measurement accuracy. The content also addresses practical challenges, such as the elimination of polarographic maxima and the need to remove dissolved oxygen to avoid interference. Finally, the properties of various materials for working electrodes, including platinum, gold, and glassy carbon, suitable for different potential windows, are described.