Metrohm 746 VA Trace Analyzer - Manual (Page 216)

5.4.4 SAMPLES
746 VA Trace Analyzer / 747 VA Stand
5-65
Parameter Range; Default value / Meaning
The following numeric examples are intended to clarify these points:
Example S0 Program V
eff
V0.sample Mass Mass.conc. ρρ
eff,s
1 10 mL SMPL>M (10 mL) 10 mL 10 mL 1 µ g 100 µ g/L 100 µ g/L
2 10 mL SMPL>M (10 mL)
DOS>M 10 mL
20 mL 10 mL 1 µ g 100 µ g/L 50 µ g/L
3 10 mL SMPL/F (10 mL)
DOS>F 10 mL
F>M 10 mL
10 mL 5 mL 0.5 µ g 100 µ g/L 50 µ g/L
4 10 mL SMPL/F (10 mL)
DOS>F 10 mL
F>M 10 mL
DOS>M 10 mL
20 mL 5 mL 0.5 µ g 100 µ g/L 25 µ g/L
Example 1: undiluted sample
Example 2: dilution in the measuring vessel
Example 3: dilution of the sample on the Autosampler,
transfer of half to measuring vessel
Example 4: as Example 3, followed by dilution in the meas-
uring vessel
Sample 10 mL, concentration 100 µ g/L (for all examples)
V
eff
Volume in the measuring vessel at start of
measurement (first sweep)
V0.sample Sample volume in the measuring vessel
Mass Substance mass found in the measuring vessel
Mass conc. Calculated mass concentration ρ
s
of the sub-
stance for the sample
ρ
eff,s
Effective mass concentration of the substance in
the measuring vessel (displayed on calibration
curve)