Transcript Analytical Chemistry - University of Nebraska Omaha

Infrared Spectroscopy
Chapters 16-17
Chapter 7-I
FT Method Advantages
1. Fellget Advantage (Multiplex Adv)
– Collect all  at once
– Faster, don’t need to scan  axis
2. Jaquinot Advantage (Throughput Adv)
– No slits or optical elements to limit (attenuate)
radiation
3. Connes Advantage
– Internally calibrated w/ HeNe laser
– Wavenumber calibration is:
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More accurate
Better stability
ATR / Evanescent wave
Saturated vs. Unsaturated
Alcohols
Ketones and Aldehydes
Carboxylic Acids
Ethers
Esters
Unknowns
Unknowns
Unknowns
Unknowns
Unknowns
Unknowns