Metrohm 746 VA Trace Analyzer - Manual (Page 126)

4.3 Lead determination with calibration curve
746 VA Trace Analyzer / 747 VA Stand
4-41
• Finally, the calibration curve is printed out; it essentially contains the
same parts as the TESTPb.mth method with standard addition (see sec-
tion 4.2.6). However, there is a difference in the curve representation. The
plot shows not only the calibration curve but also the current value
measured for the sample and the associated calculated value for ρ
eff eff
(effective lead mass concentration in the measuring vessel):
================== METROHM 746 VA TRACE ANALYZER (5.746.0101) ==================
Method : CALCRV User : Date : 1996-12-16
Mode : DPMODE Determ. : 12160827 Time : 08:27:07
Run : 3 Sample : Drink water
Calibration curve
Curve type : lin Slope : 1.438e-03 Mean.dev. : 5.933e-10
Y.reg : 5.489e-10
Substance : Pb