Metrohm viva 1.1 User Manual
Page 635
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5 Method
viva 1.1
￭￭￭￭￭￭￭￭
623
Appearance
The command has the following appearance:
Principle
In the CPVS measuring mode (Cyclic Pulse Voltammetric Stripping), the
potential of an RDE (e.g. Pt) is changed between different potentials in
pulsed discrete steps. The current I is measured as a function of time t.
U
eq
i
an
i
cath
U
t
t
U
cl
U
pl
U
st
U
eq
t
eq
t
cl
t
st
t
pl
U
eq
Equilibration potential
(see Chapter 5.5.2.11.3.4,
page 636)
t
eq
Equilibration time (see
Chapter 5.5.2.11.3.4,
page 636)
U
pl
Plating potential (see
Chapter 5.5.2.11.3.4,
page 636)
t
pl
Plating time (see Chapter
5.5.2.11.3.4, page 636)
U
st
Stripping potential (see
Chapter 5.5.2.11.3.4,
page 636)
t
st
Stripping time (see
Chapter 5.5.2.11.3.4,
page 636)
U
cl
Cleaning potential (see
Chapter 5.5.2.11.3.4,
page 636)
t
cl
Cleaning time (see Chap-
ter 5.5.2.11.3.4, page
636)
Sequence of individual steps
In the CPVS command, the following individual steps are successively exe-
cuted in the method run for the device defined in the command: