Metrohm 797 VA Computrace Manual de usuario descargar pdf (Pagina 60)

3 General settings for exploratory and determination mode

797 VA Computrace – Software

CV – Cyclic Voltammetry

General:

CV or Cyclic voltammetry is mainly used to investigate the re-

versibility of electrode processes and for kinetic studies. The CV

measurement mode can be set for the exploratory and determina-

tion mode by selecting CV - Cyclic voltammetry for the Mode pa-

rameter in the EXPLORATORY SPECIFICATION or WORKING

METHOD SPECIFICATIONS

window.

Description:

For cyclic voltammetry, the voltage is once or several times chan-

ged at a constant sweep rate to the end potential and then decrea-

sed at the same rate back to the start potential. The current i is

measured as a function of the voltage U. The curve registered in

the last cycle is stored and its peaks can be evaluated using linear,

polynomial, horizontal or exponential baselines.

cath

Start potential

First Vertex potential

Voltage step

Voltage

step time

Second Vertex potential

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Metrohm 797 VA Computrace Manual de usuario Pagina 60