PerkinElmer aanalyst 200 User Manual page 311

Possible Cause of Problem
The flame may have been too
rich or too lean for the element
being determined.
Cannot get You may not be comparing the
close to characteristic concentration
specified for the wavelength you
suggested
characteristic are using.
concentration
The instrument may not be using
the correct wavelength.
If the element is easily ionized,
ionization suppressant may be
required.
The fuel and oxidant flows may
not be set properly or the wrong
type of flame may be being
used.
Slit width may be too wide.
Nebulizer may not be adjusted
properly.
AAnalyst 200 User's Guide
Check and/or Remedy
Refer to the recommended flame
conditions in the Standard Conditions
window for the element or the Analytical
Methods manual.
Recheck the characteristic concentration
for the wavelength.
Check the wavelength. If a problem is
found, contact a PerkinElmer service
engineer for assistance.
Add approximately 1000 mg/L of an
easily ionized salt (such as potassium,
lithium, or lanthanum) to samples,
standards, and blank.
Adjust the gas flows or change to a
nitrous oxide-acetylene flame if
appropriate.
Check recommended settings in the
Standard Conditions window for the
element being determined.
Adjust the nebulizer using the
information given in this User's Guide.
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