Subject: Chemical sciences
Year: 2023
Type: Teaching Resource
Type: NonPeerReviewed
Title: Analysis of Square-Wave Voltammograms
Author: Gulaboski, Rubin
Abstract: Square-wave voltammetry is a differential technique that utilizes a waveform consisting of a sequence of symmetrical square waves superimposed on a base staircase, which is applied to the working electrode. In an experiment using square-wave voltammetry, the potential of the working electrode is incrementally changed through a series of forward and reverse pulses, starting from an initial potential and ending at a final potential. The magnitude of the forward step is determined by the square amplitude, while the reverse step is determined by subtracting the square increment from the square amplitude.When a square wave potential is applied to the working electrode, it generates electric currents. These currents are measured twice during each square-wave cycle: once at the end of the forward pulse (if) and once at the end of the reverse pulse (ir). The difference between these two measured currents (Δi = if - ir) is plotted against the potential of the base staircase. This process yields a symmetrical voltammogram with peak-shaped features, centered around the half-wave potential. The peak current observed is proportional to the concentration being analyzed. In this brief tutorial, we will discuss the fundamental principles behind analyzing square-wave voltammograms.
Publisher:
Relation: https://eprints.ugd.edu.mk/31904/
Identifier: oai:eprints.ugd.edu.mk:31904
Identifier: https://eprints.ugd.edu.mk/31904/1/Analysis%20of%20Square-Wave%20Voltammograms.pdfIdentifier: Gulaboski, Rubin (2023) Analysis of Square-Wave Voltammograms. [Teaching Resource] (Unpublished)
