The interferometer modifies the light in a special way to allow for subsequent processing of the data.
#Ftir data with essential ftir full#
Light from a broad-band light source containing the full spectrum of wavelengths to be measured is shone through a device called an interferometer.Fourier is also credited with the discovery of the greenhouse effect, long before anyone had thought about CO2 emissions. He would no-doubt be delighted to know that his work is still being put to good use in concert with the latest developments in analytical technology today. The Fourier Transform was first developed by the French mathematician Jean Baptiste Joseph Fourier (1768–1830). Generally though, it is the name of a mathematical technique used to convert measurement data into a usable result (Fourier Transform) that is popular, hence, Fourier Transform Infrared, or FTIR for short. This is the ‘mid-infrared’ region and this is why FTIR is also sometimes referred to as Mid IR. Specifically, the wavelengths between 2,500 nanometers (nm) and 25,000 nm are used. Let’s get the basics out of the way first and then take a look at the many interesting applications for this versatile method.įourier Transform Infrared (FTIR) analysis is a spectroscopic technique that makes use of the naturally occurring electromagnetic spectrum. Fourier Transform Infrared (FTIR) is well worth knowing about, particularly if you are interested in testing liquid food and agri samples such as milk and wine.
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