Fourier Transform Infrared Spectroscopy (FTIR):
FTIR stands for Fourier transform infrared, the preferred method of infrared spectroscopy. When IR radiation is passed through a sample, some radiation is absorbed by the sample and some passes through (is transmitted). The resulting signal at the detector is a spectrum representing a molecular ‘fingerprint’ of the sample.
The usefulness of infrared spectroscopy arises because different chemical structures (molecules) produce different spectral fingerprints. It Achieve qualitative and quantitative analysis of a wide range of organic and inorganic samples in academic, analytical, QC/QA, and forensics laboratories.
FTIR is frequently used for polymer testing and pharmaceutical analysis, but the technique offers virtually limitless applications.