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Agilent 55B AA Spectrometer User's Guide
14
Unstable signals with
flame
15
When using SIPS, the
high standards curve
excessively
16
No peak found
17
D
lamp energy low
2
18
D
lamp energy high
2
19
Signal not increasing
and excessive
curvature
a) Check burner alignment.
b) Check flame shield and front panel installed in sample
compartment.
c) Check purity of gas supplies. No moisture or oil in the
air supply.
d) Check nebulizer, burner, spray chamber and paddles
are clean.
e) Check without mixing paddles installed. No change in
signal stability indicates the issue is occurring before
the spray chamber.
f) Check nebulizer is correctly set up and correct plastic
capillary (wide or narrow bore) is used.
g) Check the impact bead adjustment.
h) Check that the acetylene bottle pressure is >700 kPa
and that acetone has not been allowed to enter the
instrument.
a) Check nebulizer uptake rate is faster than fastest SIPS
pump rate.
a) Check as for fault 11.
b) Check correct wavelength selected.
c) For flame emission, check sufficient concentration of
solution and the high standard is used to optimize.
d) Check that the correct hollow cathode lamp is being
used.
a) Check as for fault 11.
b) Reduce hollow cathode lamp current.
c) Increase slit width.
d) Change D
lamp.
2
a) Check hollow cathode lamp energy.
b) Reduce slit width.
a) Check standard solutions (particularly high standard).
b) Select a different wavelength.
c) Reduce lamp current.
d) Reduce slit width.
e) Operate within the working range (0.1 to 0.8 Abs).
Troubleshooting/Errors
139
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