linear sweep voltammetry

Linear sweep voltammetry (LSV) is an electroanalytical technique used for both qualitative and quantitative chemical analysis. It involves dipping a set of electrodes into a solution containing the analyte and applying a regularly varying potential to an indicator electrode relative to a reference electrode. The analyte then electrochemically reacts at the indicator electrode.12

In LSV, the potential applied to the indicator electrode typically varies linearly with time, creating a potential ramp. Initially, the potential is set so that no reaction occurs. As the potential is scanned, it eventually provides enough energy for the analyte to undergo an electrochemical reaction, such as reduction or oxidation, leading to a flow of current. A voltammogram, which plots current against applied potential, shows characteristic waves or peaks at specific potentials for different substances, allowing for qualitative identification. The height of these waves or peaks is directly proportional to the analyte's concentration, enabling quantitative analysis.12