Owner manual

4.3 Lead determination with calibration curve

746 VA Trace Analyzer / 747 VA Stand

4-37

• The full report Full report essentially contains the same parts as that

of the TESTPb.mth method with standard addition (see section 4.2.6).

However, the following sections are different:

1 Data for substance Only the substance name Pb is given, the other

evaluation parameters remain blank as they are not calcula-

ted when the calibration curve is recorded.

2 Data for calibration Offset Y.offset and slope Slope of the

curve calibration curve.

3 Final results The final result is not calculated as the variable

MC:Pb is not calculated when the calibration

curve is recorded.

• Finally, the calibration curve is printed out:

================== METROHM 746 VA TRACE ANALYZER (5.746.0101) ==================

Method : CALCRV User : Date : 1996-12-15

Mode : DPMODE Determ. : 12151548 Time : 15:48:08

Run : 2 Sample :

Calibration curve

Curve type : lin Slope : 1.438e-03 Mean.dev. : 5.933e-10

Y.reg : 5.489e-10

Substance : Pb

• The printout of the calibration curve essentially contains the same parts

as the TESTPb.mth method with standard addition (see section 4.2.6).

However, the following sections are different:

1 Data for calibration curve Curve type, addition mode, slope of the calibration

curve, offset Y.offset of the calibration curve,

mean deviation of the measured values about the

calibration curve.

2 Calibration curve Measured points (mean values of the measured

peak currents for the calibration solutions),

calculated calibration curve, current axis, axis for

effective mass concentration in the measuring

vessel.