ATOMIC ABSORPTION SPECTROSCOPY QUESTIONS WITH ALL CORRECT & VERIFIED ANSWERS

# ATOMIC ABSORPTION SPECTROSCOPY QUESTIONS
WITH ALL CORRECT & VERIFIED ANSWERS
What is the purpose of the hallow
Cath- ode lamp? a spectral line source.

1.)Biological, medical, clinical
What are some common (hair, blood, urine, tissue,
applications of AAS? nails)
2.)Environmental
3.)Steel industry
4.)Food industry
What is the purpose of the atomizers? Generate Ground State Atomic
Vapor.
1.) FLAME
2.) GRAPHITE
What are examples of atomizers?
FURNACE
What is the purpose of the a Graphite Furnace Atomizer?
nebulizer in the Flame AA?


What are the advantages of
using a flame atomizer?




What are the limitations of using a
flame atomizer?




What are the advantages of
using a Graphite Furnace
Atomizer?




What are the limitations of using
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, # ATOMIC ABSORPTION SPECTROSCOPY QUESTIONS
WITH ALL CORRECT & VERIFIED ANSWERS
It creates an aerosol through the
nebulize- er into a Body Chamber
flame.
1.) Good precision
2.) Good accuracy
3.) Rapid sample analysis
(30s/sample)
4.) $20K
5.) Easy maintenance
1.)No speciation information
2.)Single-element technique
3.)Destructive technique
4.)Cannot be easily automated
5.)Detection limits are ~ppm
6.)Limited linear range
1.)LOW Limits of Detection (low
ppb -> ppt)
2.)Very small volumes of
sample are needed.
3.)Can handle solids directly
4.)Can avoid flame chemistry
problems
1.)Not as convenient as a flame
2.)Instrumentation more costly
(~40K)
3.)Precision and accuracy good
but re- quires operator skill
4.)Variety of other matrix effects
can be problematic




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