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Title : A CRITICAL REVIEW ON FUNDAMENTAL AND PHARMACEUTICAL ANALYSIS OF FT-IR SPECTROSCOPY
Authors : *G. Murali Krishna, M. Muthukumaran, B. Krishnamoorthy, Ameren Nishat
Abstract : Fourier transform infrared spectroscopy (FTIR) is a technique which is used to obtain an infrared spectrum of absorption, emission, photoconductivity or ramanscattering of  solid,    liquid or gas. An FTIR spectrometer simultaneously collects spectral data in a wide spectral range. An FT-IR Spectrometer is an instrument which acquires broadband NIR to FIR spectra. Unlike a dispersive instrument, i.e. grating monochromator or spectrograph, FT-IR Spectrometers collect all wavelengths simultaneously. FT-IR (Fourier Transform Infra Red) is a method of obtaining infrared spectra by first collecting an interferogram of a sample signal using an interferometer, and then performing a Fourier Transform (FT) on the interferogram to obtain the spectrum. The main goal of FTIR spectroscopic analysis is to determine the chemical functional groups in the sample. Using various sampling accessories, FTIR spectrometers can accept a wide range of sample types such as gases, liquids, and solids. Thus, FTIR spectroscopy is an important and popular tool for structural elucidation and compound identification.

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