Infrared spectroscopy
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Infrared spectroscopy is a commonly used spectroscopic method used by organic and inorganic chemists. Infrared (IR) spectra is infrared radiation data collected within a special instrument called an IR spectrometer and is used in an attempt to absorb frequencies by placing gases, liquids or solids in the way of the IR beam. This in turn allows information about the structure of a compound to be known, then analysis can be done regarding purity. When the appropriate data is collected minimal information in favorable conditions is gleaned within a 1% margin of error. [1]
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Electromagnetic Spectrum
The electromagnetic spectrum is the collection of radiant energy from cosmic rays to X-rays, ultraviolet light to visible light, to microwaves as well as others. Each of these radiant energies is considered a wave or particle traveling at the speed of light. Since energy is directly proportional to frequency and inversely proportional to wavelength, mathematical formulas are used so that separate waves can be differentiated. An increase in wave number can be considered an increase in energy as well.
IR is found within the section of the electromagnetic spectrum in which the wave numbers are roughly from 13,000 to 10 cm–1, or wavelengths from 0.78 to 1000 μm. [2]
References
- ↑ Infrared Spectroscopy by C.-P. Sherman Hsu, Ph.D.
- ↑ IR Spectroscopy Tutorial Organic Chemistry Undergraduate Courses
External Links
- Dynamics: Infrared Spectroscopy Department of Chemistry and Biochemistry - Worcester Polytechnic Institute
- Interpretation of Infrared Spectra CSU, Stanislaus Chemistry Department
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