Metrohm 746 VA Trace Analyzer - Manual (Page 118)

4.3 Lead determination with calibration curve
746 VA Trace Analyzer / 747 VA Stand
4-33
Method: CALCRV SUBSTANCES
Pb - DPASV
Calibration 1996-11-22 16:35 Coefficients
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД ДДДДДДДДДДДДДДДДДДДДДДДД ДДДДДДДДДДДДДДДДДДДДДДДД
Technique cal.crv. Y.offset -8.183e-10
Curve type linear Slope 0.002712
Temperature 20.0 °C Nonlin
Mean dev. 1.113e-09
Range min g/L # CSoln.name Mass conc.
Range max g/L ДДДДДДДДДДДДДДДДДДДДДДДД ДДДДДДДДДДДДДДДДДДДДДДДД
0 Pb-1 2.5 ug/L
M.conc./cm g/L 1 Pb-2 5 ug/L
M.conc.begin zero 2 Pb-3 10 ug/L
3 Pb-4 20 ug/L
V0.CSoln. 10.000 mL 4 g/L
5 g/L
6 g/L
7 g/L
8 g/L
9 g/L
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• The following is a brief explanation of the most important parameters:
Technique Calibration technique: calibration curve
Curve type Curve type for calculation of the calibration curve:
linear
Temperature Temperature of the analysis solution
V0.CSoln. Volume added of every calibration solution
Y.offset Offset of the calibration curve
Slope Slope of the calibration curve
Mean dev. Mean deviation of the calibration curve
CSoln.name Name of the calibration solutions
Mass conc. Mass concentration of the calibration solutions
4 Switch to dialog page "CALCULATION"
• Press the yellow key. The dialog page "CALCU-
LATION" appears for calculation of the final results. The mass concen-
tration of lead ( MC:Pb ) determined using the calibration curve is put out
as the result in g/L with 4 significant figures.
5 Switch to dialog page "DOCUMENTATION"
• Press the yellow key. The dialog page "DOCU-
MENTATION" appears for the automatic output of reports and curves.
The two lines entered in the example have the following meaning:
Report Full Printout of the full result report on the printer
Curve Cal Sbst:Pb Printout of the calibration curve on the printer
• Press the softkey . The subpage of "DOCUMENTATION"
appears with the method comment describing, among other things, the
procedure used in the calibration and determination.
• Finally press the key to return to the main page of
"DOCUMENTATION".