PlasmaQuant MS product family
Optimizing hardware
61
After changing the resolution and trim settings, you must redo the mass calibration to
set the position and resolution of the remaining spectrum.
Resolution and trim should be checked routinely once a month and whenever mass
calibration does not give satisfactory results for peak widths. Resolution and trim
should also be checked any time after the PlasmaQuant MS power has been off.
Generally, if the mass calibration routine passes and finds satisfactory results for all of
the requested peaks, the resolution and trim are okay and do not need adjustment.
If the optimization routine fails refer to section "Troubleshooting" p. 127.
Fig. 28 Peak resolution and trim
1.
Aspirate the 1 µg/L (1 ppb) tuning solution.
2.
On the I
NSTRUMENT
window, click the R
ESOLUTION AND
T
RIM
tab.
3.
Ensure that the R
ESOLUTION
(AMU) box is set to 0.80.
4.
Select the elements
9
Be and
208
Pb (default settings) from the L
OW
I
SOTOPE
and H
IGH
I
SOTOPE
list.
5.
Click [S
TART
].
6.
Select the sample introduction mode (manual, autosampler) in the dialog box and
click [R
EAD
].
The system automatically selects the optimum peak widths and positions.