What is the difference between IR Spectroscopy and FTIR Spectroscopy?
Dispersive IR or simply just IR spectrometry takes absorptions of one monochromatic IR light at a time and sum those up to draw the spectrum. While this might take minutes FT-IR in the other hand, takes a summed absorption of multi-chromatic light and distributes it in order to make a spectrum using the Fourier transforms. This technique is much faster (1-4 seconds) and more effective.
