Metrohm 797 VA Computrace Manual de usuario Pagina 69

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3.2 VA measurement modes
797 VA Computrace – Software
57
CPVS - Cyclic Pulse Voltammetric Stripping
General:
CPVS or Cyclic Pulse Voltammetric Stripping is used to de-
termine organic additives in electroplating electrolytes. The CPVS
measuring mode can be set for the exploratory and determination
mode by selecting CPVS - Cyclic Pulse Voltammetric Stripping for
the Mode parameter in the EXPLORATORY SPECIFICATION or
WORKING METHOD SPECIFICATIONS window.
Description:
For Cyclic Pulse Voltammetric Stripping, the potential of an RDE
(e.g. Pt) is changed between different potentials in pulsed, discrete
steps in a plating bath. The current i is measured as a function of
the time t. The curves registered in the last cycles are stored and its
peaks can be evaluated using linear or horizontal baselines.
i
an
t
i
cath
U
t
Conditioning
Stripping
Cleaning
Cleaning
Conditioning
Stripping
Plating
Plating
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