Lat standard addition for brighteners, Determination tab with calibration technique “lat – Metrohm 797 VA Computrace User Manual
Page 170
6 Electroplating Bath VA
797 VA Computrace – Software
158
Area
Peak area between peak curve and calculated
baseline.
Derivative
Difference between positive an negative maximum
of the first derivative of the voltammogram.
Coulometric
Charge transmitted during the peak.
Smooth factor [ 1...6 ; 4 ]
Smoothing power of the Savitzky/Golay smooth-
ing of the baseline (1 = minimum smoothing, 6 =
maximum smoothing) (s
ee
Smoothing and differ-
entiation
, section 5.8
).
Eliminate spikes
Eliminates spikes to smooth the signal.
Reverse sweep [ on, off ; off ]
Enable peak evaluation of the reverse sweep of
cyclic sweeps (not available with CPVS).
LAT Standard addition for brighteners
L
inear
A
pproximation
T
echnique (“LAT Standard addition for
brighteners”) is a
Calibration
technique for CVS and CPVS. It is
mainly used to analyze Brighteners in electroplating baths. It is cho-
sen, if the difference between Q(“Intercept solution” + “Bath solu-
tion”) and Q(only “Intercept solution”) is too small to use “MLAT
Standard addition for brighteners”.
The "Intercept value" needed for the calculation can be recorded
and adopted automatically with the
Calibration
technique "LAT Re-
cord intercept value".
Note: If possible, “MLAT” should be the preferred
Calibration
tech-
nique for Brightener determination. With “MLAT”, “Intercept solu-
tion” and “Bath solution” are measured successively in the same
method run, what minimizes fluctuations caused by solution ex-
change and time displacement of the measurements.
Note: A determined "Intercept value" is only adopted automati-
cally if the checkbox
Save calibration curves additionally without
date and time
on the
General
tab of the
GENERAL SETTINGS
win-
dow is checked.
Determination tab with Calibration technique “LAT”
The
Determination
tab of the
EDIT WORKING METHOD PARAME-
TERS
window contains general specifications for performing the
determination. The parameters displayed depend on the selected
Calibration
technique and measurement
Technique
. With “LAT