Metrohm 797 VA Computrace - Manual (Page 165)

6.2 Calibration techniques with CVS and CPVS
797 VA Computrace – Software
153
CVS - Cyclic Voltammetric Stripping section 3.2,
and CPVS - Cyclic Pulse Voltammetric Stripping
section 3.2)
Substances tab with Calibration technique “Standard addition
plating bath”
The Substances tab of the EDIT WORKING METHOD PARAMETERS
window contains parameters for the definition and recognition of
substances, for the definition of standard solutions, for peak
evaluation and results calculation. The parameters displayed de-
pend on the
Calibration technique selected in the WORKING MET-
HOD SPECIFICATIONS window. With “Standard addition plating
bath” following parameters have to be defined:
Substance [ 24 characters ; ]
Substance name. For the assignment of a found
peak to this substance the checkbox on the left
side of the substance name must be checked.
With CVS:
Peak pos. +/- (V) [ -5...+5 V ; 0 V ]
Position of the peak voltage for the substance and
tolerance for this verification voltage.
With CPVS:
Step potential [ read only ; step 1: 0.2 V ]
Displays the potential values, which are defined in
the window
edit stripping steps .
Bsln .
Parameters for baseline evaluation (details see
Baseline , section 5.2). Click the button to open
the BASELINE window for the selected substance.
Additive solution
Definition of addition solutions for standard addi-
tion.
No. [ 0...8 ; 0 ]
Number of addition solution used for manual or
automatic addition. For automatic additions, this
number is also the Dosing Device number. If a
mixed standard solution is used, the number of
this solution must be entered for each substance
present in the mixed solution.
Achtung: Dosino 1..3 refer to Dosinos con-
nected to the 797 VA Computrace. Dosino 4...7
refer to Dosinos connected to the 846 Dosing In-
terface (to MSB 1...4).
Conc. [ > 0 ; 0 ]
Value for concentration of addition solution.
Unit [ fL/L...mL/L ; mL/L ]
Unit for concentration of addition solution.