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Microanalysis and Microscopy: Capabilities

Fourier Transform Infrared Spectroscopy

FTIR is most often used when there is a need to identify a substance, and is usually applied to organic materials and compounds, but can also be used for some inorganic materials. The technique is typically non-destructive and can be applied to a variety of solids, liquids, crystals, gels, and thin films. Samples are subjected to infrared radiation, which analyzes the molecular structure of the sample to produce an absorption spectrum. This spectrum is then compared to a library of known spectra or, alternatively, the sample may be compared to a standard known material. In doing so, one can identify the organic compounds present. Detection limits for FTIR range from 0.1% to 1% if the compound is a minor component of a sample. It can analyze particles as small as 10 micrometers.

Contact: Michael Lamvik