Metrohm 757 VA Computrace - Manual (Page 90)

5 Determination mode
757 VA Computrace – Software
80
Nonlinear Regression (through Zero)
The regression is calculated with a nonlinear cur-
ve forced to the zero point. This option is only
available if
Record calibration curve is selected for
Calibration .
Peak evaluation [ Height, Area, Derivative ; Height ]
Selection of peak evaluation quantity:
Height
Peak height from baseline to peak maximum.
Area
Peak area between peak curve and calculated
baseline.
Derivative
Difference between positive an negative maxi-
mum of the first derivative of the voltammogram.
Minimum peak width (V.step) [ ≥ 5 ; 5 ]
Minimum peak width for peak recognition by
number of
Voltage steps (= number of measure-
ment points).
Minimum peak height (A) [ > 50 pA ; 100 pA ]
Minimum peak height for peak recognition.
Smooth factor [ 1...6 ; 4 ]
Smoothing power of the Savitzky/Golay smooth-
ing of the baseline (
1 = minimum smoothing, 6 =
maximum smoothing).
Reverse peaks [ on, off ; off ]
Enable peak evaluation of reverse peaks (peaks
with opposite direction compared to the sweep
or pulse direction).
Reverse sweep [ on, off ; off ]
Enable peak evaluation of the reverse sweep of
cyclic sweeps (only available with CV).