Infrared Spectroscopy
8
Infrared Spectroscopy Terry A. Ring Chemical Engineering University of Utah
-
Upload
michael-conner -
Category
Documents
-
view
28 -
download
3
description
Infrared Spectroscopy. Terry A. Ring Chemical Engineering University of Utah. Molecular Vibrations. Mass on a spring Vibration Frequency ν=c/λ Wave number =1/ λ. Spectrometer. Single Beam Dual Beam with Reference Gas, Liquid & Solid Sample Cells Powder mixed with KCl to make pellet - PowerPoint PPT Presentation
Transcript of Infrared Spectroscopy
Infrared Spectroscopy
Terry A. Ring
Chemical Engineering
University of Utah
Molecular Vibrations
• Mass on a spring
• Vibration Frequency
• ν=c/λ
• Wave number =1/ λ
Spectrometer
• Single Beam• Dual Beam
– with Reference
• Gas, Liquid & Solid• Sample Cells• Powder mixed with
KCl to make pellet• Reflection off surface
of Sample• Attenuated Total
Reflection
Sample
Sample
Spectrum
• Peak Identification
Spectrum
• Peak Identification– Valence Vibrations– Bending Vibrations
Peak Identification
Fourier Transform IR
• Mixing light from– Fixed mirror – Moving mirror
Raman Spectroscopy• Laser Light
Illumination
• Scattered Light Spectra Observed