FTIR

Infrared (IR) spectroscopic analysis can be used to identify both organic compounds and inorganic substances. The technique uses infrared light to excite the bonds of molecules in a sample and measure the extent to which the material absorbs infrared light (electromagnetic energy) at different wavelengths. The measurement is repeated over a range of frequencies to allow the behaviour of the sample to be investigated over a wide range of IR light. From the measured interferograms, the absorption at each wavelength, i.e. the energy spectrum of each material, is obtained by Fourier transform (FT). This method provides information about the chemical bonds type and the main functional groups of the molecules in the sample, which is why infrared spectroscopy is also called "chemical fingerprinting.

Fourier transform infrared spectroscopy

Analysis method

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