By Barbara H. Stuart
Offers an advent to these desiring to take advantage of infrared spectroscopy for the 1st time, explaining the basic elements of this system, how you can receive a spectrum and the way to examine infrared info protecting a variety of purposes.
- Includes instrumental and sampling techniques
- Covers organic and business applications
- Includes compatible questions and difficulties in each one bankruptcy to help within the research and interpretation of consultant infrared spectra
Part of the ANTS (Analytical strategies within the Sciences) Series.
Read or Download Infrared Spectroscopy: Fundamentals and Applications (Analytical Techniques in the Sciences) PDF
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Extra info for Infrared Spectroscopy: Fundamentals and Applications (Analytical Techniques in the Sciences)
Traditional dispersive spectrometers were described. The operation and capabilities of Fourier-transform infrared spectrometers were also discussed. Transmission methods for obtaining infrared spectra were also examined. The sampling methods which can be used for solids, solutions, liquids and gases were presented. The different reﬂectance methods that are now widely available, such as ATR spectroscopy, specular reﬂectance and diffuse reﬂectance, along with photoacoustic spectroscopy, were also introduced.
Summary The ideas fundamental to an understanding of infrared spectroscopy were introduced in this chapter. The electromagnetic spectrum was considered in terms of various atomic and molecular processes and classical and quantum ideas were introduced. The vibrations of molecules and how they produce infrared spectra were then examined. The various factors that are responsible for the position and intensity of infrared modes were described. Factors such as combination and overtone bands, Fermi resonance, coupling and vibration–rotation bands can lead to changes in infrared spectra.
This problem may be overcome by substituting water with deuterium oxide (D2 O). 1 Summary of some optical materials used in transmission infrared spectroscopy. , Modern Infrared Spectroscopy, ACOL Series, Wiley, Chichester, UK, 1996. 7 Properties Soluble in water; slightly soluble in alcohol; low cost; fair resistance to mechanical and thermal shock; easily polished Soluble in water and alcohol; slightly soluble in ether; hygroscopic; good resistance to mechanical and thermal shock Insoluble in water; resists most acids and bases; does not fog; useful for high-pressure work Insoluble in water; soluble in acids and NH4 Cl; does not fog; sensitive to thermal and mechanical shock Similar properties to NaCl but less soluble; hygroscopic Soluble in water and acids; hygroscopic Soluble in water and alcohol; hygroscopic the vibrational wavenumber.