Elimination voltammetry as an innovative tool of electroanalysis

Abstract

• Overview of principles and applications of elimination voltammetry with linear scan (EVLS). • EVLS as a promising tool for obtaining new information about electrochemical processes. • A critical look on the use of EVLS for LSV or CV experiments. • Perspectives and possibilities of EVLS for description of different electrode process mechanisms (CE, CEE). The review presents the application potential of elimination voltammetry with linear scan (EVLS) in the electroanalysis of organic and inorganic electroactive substances. This innovative method can be considered a software tool that transforms the total current-voltage records measured at different scan rates into elimination functions providing new useful information about a given electrode process. Some EVLS functions are capable of separating overlapped voltammetric signals, identifying the adsorbed state of the analyte, and detecting the preceding chemical reaction before the electron transfer. EVLS finds use in solving the mechanisms of electrode processes and determining significant physicochemical parameters, such as charge transfer coefficients and electrochemical equilibrium protonation constants. This review selects and draws attention to certain problems that may accompany EVLS in voltammetric experiments on solid electrodes.