Ftir

Why fourier transform is used in ir spectroscopy

Why fourier transform is used in ir spectroscopy

Fourier transform infrared spectroscopy (FTIR) uses the mathematical process (Fourier transform) to translate the raw data (interferogram) into the actual spectrum. FTIR method is used to obtain the infrared spectrum of transmission or absorption of a fuel sample.

  1. Why FTIR is used instead of IR spectroscopy?
  2. What is the advantage of Fourier transform spectrometer?

Why FTIR is used instead of IR spectroscopy?

The acquisition of FTIR spectra is much faster than by conventional dispersive instruments. The FT method produces spectra that show a much better signal-to-noise ratio and, as the wavelength scale is calibrated with a very precise reference laser, provides higher wavelength accuracy than IR.

What is the advantage of Fourier transform spectrometer?

FTIR spectrometers have several prominent advantages: (1) The signal-to-noise ratio of spectrum is significantly higher than the previous generation infrared spectrometers. (2) The accuracy of wavenumber is high. The error is within the range of ± 0.01 cm-1.

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