FTIR Spectroscopy | Fourier Transform Infrared Spectrophotometer
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FTIR Spectroscopy

Fourier Transform Infrared (FTIR) is a spectroscopic technique to measure the infrared (IR) absorption spectrum of materials. The IR spectral range expands from 14,000 cm-1 to 10 cm-1 and corresponds to vibrational transitions of molecules, therefore an FTIR spectrum contains vibrational information on the sample studied.

FTIR spectroscopy is a non-destructive analytical technique that can be applied to solid, liquid, and gas samples. It is most commonly used in the range of
4,000 cm-1 – 400 cm-1, known as the mid-IR region. Functional groups within molecules have distinct vibrational frequencies which show as different absorption bands in their FTIR spectrum. These bands provide characteristic FTIR spectra which allow identification of compounds and complex samples. Both qualitative and quantitative analyses are possible with FTIR making it a highly versatile technique.

The Fourier Transform technique can be utilised for IR photoluminescence (PL) besides IR absorption. Some FTIR spectrometers such as the Edinburgh Instruments IR5 can be configured as a dual absorption and PL instrument for the IR range.

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FTIR Spectroscopy

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Applications

FTIR Spectroscopy can be used in the following applications:

  • Analytical Chemistry
  • Polymers
  • Food and Beverage
  • Pharmaceutical
  • Environmental
  • Quality Control

Read our latest FTIR Application Notes:

Fourier Transform Photoluminescence in a Benchtop FTIR Spectrometer

ATR-FTIR of Blood Serum Using a Heated ATR Accessory

You can find all of our Application Notes here.

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