Metrohm viva 1.1 (ProLab) - Manual (Page 619)

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5 Method
viva 1.1 (for process analysis)
￭￭￭￭￭￭￭￭ 607
at a constant potential sweep rate. The current I is measured as a function
of the potential U in this process.
t(i)
U
start
U
1
U
step
t
step
U
2
i
an
i
cath
U
U
t
U
step
Potential step (see Chap-
ter 5.5.2.11.2.4, page
618)
t
step
Potential step time (see
Chapter 5.5.2.11.2.4,
page 618)
U
start
Start potential (see
Chapter 5.5.2.11.2.4,
page 618)
U
1
1st vertex potential (see
Chapter 5.5.2.11.2.4,
page 618)
U
2
2nd vertex potential
(see Chapter 5.5.2.11.2.4,
page 618)
i
an
Anodic current
i
cath
Cathodic current
Sequence of individual steps
In the CVS command, the following individual steps are successively exe-
cuted in the method run for the device defined in the command:
Pretreatment
1 Stirrer on
The stirrer is switched on with the defined Stirring rate.
2 Stirring time
Idle until the period defined in the Stirring time parameter has
expired.
3 Potential 1
Potential 1 is applied to the electrodes.