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Description

This course will present the origins of spectral bands in Infrared, Raman, and NIR spectra. This will start with a discussion of fundamental molecular vibrations and where these are present in mid-infrared and Raman spectra and explain how overtone and combination bands can appear in the NIR as well as in mid-infrared and Raman spectra. Some direct guidelines will be presented to show which transitions are allowed. This will not be a theoretical discussion that involves mathematics or quantum mechanics, but rather an understanding of the physical phenomena that led to the development of the mathematical approaches. A key issue to the collection of good spectra is an understanding how spectrometers work. Such topics include instrument components, resolution, spectral range, measurement sensitivity, instrumental effects on spectral lineshape, instrument sources of errors, and effects of mathematical manipulation of spectra.

Register for this Short Course

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Track(s)

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  Chemical Materials/Materials Science

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Course Outline

• Fundamental molecular vibrations
• Introduction to mid-infrared, Raman, and Near-infrared spectra
• Fundamental bands versus fingerprint bands
• First and second order coupling
• Overtone and combination bands
• Overview of allowed transitions in mid-infrared spectra
• Overview of allowed transitions in Raman spectra
• Overview of allowed transitions in near-infrared spectra
• Instrument components; sources, detectors, spectral engines, etc.
• Instrument designs and why they are preferred for different measurements
• Effects of resolution on spectra and information content

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Learning Objectives

All too often the choice of a vibrational technique, or even the purchase of a spectrometer, is made based solely on a publication in a related field, or upon recommendation of a sales associate. Knowledge of what functional groups are best measured by what technique, inherent sensitivity of the technique and instrumentation, as well as sample matrix, all help to make an informed choice.

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Additional Info

Categories (Up to 5):
Forensics,Infrared Spectroscopy,Petroleum Analysis,Pharmaceutical Sciences,Raman Spectroscopy

Proposal Number:
SC14540

Scientific Specialties:
Spectroscopy - IR/Raman,Spectroscopy – Other

Target Audience:
This course is designed for scientists and engineers new to vibrational spectroscopy as well as practitioners who need a stronger understanding of vibrational spectra and the instrumentation.

Type of Industry:
Analytical Chemistry/Equipment/Instruments,Chemicals/Chemical Equipment,Cosmetics/Fragrances/Flavors,Environmental/Air/Water/Wastewater,Food/Beverage/Consumer Products,Petroleum/Petrochemicals,Pharmaceutical,Polymers/Coatings/Rubber