Metrohm 746 VA Trace Analyzer User Manual
Page 100
4.2 Lead determination with standard addition
746 VA Trace Analyzer / 747 VA Stand
4-15
The dialog page "DOCUMENTATION" can be used for the entry of reports and curves
which should be put out automatically to the specified destination at the end of the
determination. A single line or all these lines can also be executed later using the
softkeyy
You will find further information regarding this dialog page in section 5.6.5.
•
The three lines entered in the present example have the following mean-
ing:
Report Full
Printout of the full result report on the
built-in or connected printer
Curve Smth Sbst:Pb VR:**
Printout of all smoothed substance
curves on the built-in or connected printer
Curve Cal Sbst:Pb
Printout of the calibration curve (graphical
representation of the standard addition)
on the built-in or connected printer
•
If you do not desire an automatic printout in the subsequent lead deter-
mination, you can either delete the three entered lines with the softkey
or clear the output destination
Printer
for each line with
the
•
Press the softkey
. The subpage of "DOCUMENTATION"
appears with the method comment:
Method: XXXXXXXX DOCUMENTATION
Comment
Method: - Pb determination with DP polarography from -200 mV to -550 mV.
- This method can be used as a first test after installing the
746 VA Trace Analyzer and the 747 VA Stand or can be used as
standard operating procedure (SOP) for a GLP test of 746/747.
- For detailed information see instruction manual.
Electrodes: - Multi-Mode electrode
- Ag/AgCl reference electrode with KCl 3 mol/L
- Pt auxiliary electrode
Reagents: - KCl 3 mol/L (6.2308.020)
- Pb ion standard 1 g/L (6.2301.100)
- dist. or deion. water
Procedure: - Add 20 mL of water, 0.5 mL of KCl 3 mol/L and 100
µµL of
Pb ion standard 1 g/L (that means 100
µµg Pb)
into the well rinsed measuring vessel.
- Enter '100 uL' for 'Sample size/S0' on MONITORING page.
- Start determination.
- Add 2 * 100
µµL of Pb ion standard 1 g/L (standard addition).
Help
Delete
line
Insert
line
Get
line
Put
line
>>
Output
The dialog page "DOCUMENTATION" includes a subpage on which maximum 20
lines of free text can be entered as a comment on the method.
You will find further information regarding this dialog page in section 5.6.5.
•
In the present example, details of the method, the electrodes and rea-
gents to be used and the procedure used in the lead determination are
entered.
•
Finally press the
TATION".