Bioquímica e Bioquímica Analítica

Abstrato

Voltammetry as Analytical Technique in the Study and Quantitation of Several Food and Beverage Components: An Editorial

Aurelia Magdalena Pisoschi

Voltammetric measurements rely on applying a controlled potential variation, and consequently recording the intensity versus potential dependence (voltammogram).

There are various ways to impose a potential variation in time, and subsequently a series of voltammetric methods. Cyclic voltammetry relies on linearly scanning the potential in time, observing a triangular waveform variation [1-3]. Differential pulse voltammetry is based on two samplings of the current intensity for each potential pulse: one measurement before applying the pulse, and the second towards the end of the pulse period. In square-wave voltammetry, a square-wave is superimposed on the potential staircase sweep, the current intensity being recorded at the end of each potential change.