Atomic spectroscopy
methods
Design of instrumentation
to probe a material
Characterization of
Properties
Molecular Methods
Elemental Analysis
Techniques for reducing
matrix effects include:
Extreme trace elemental
analysis
Extreme trace elemental
analysis
Molecular
Spectroscopy
IR, UV-Vis, MS, NMR
Techniques
Reason to understand how
an instrument works
Atomic spectroscopy
Atomic spectroscopy for
analysis
Slide 14
General issues with
flames
Inductively Coupled
Plasma
Inductively Coupled
Plasma
AA Instrument Schematic
Atomic Absorption
AA instrumentation
Hollow Cathode Lamp
Emission is from elements in cathode that have been sputtered off into gas
phase
Light Source
Atomizers
AA - Flame atomization
Sources of error
Atomizers
Electrothermal
atomization
Graphite Furnace
Graphite Furnace AA
Closeup of graphite
furnace
Controls for graphite
furnace
Detector
Background corrections
Atomic Absorption
Beer’s Law
Problems with Technique
Problems continued
Interferences