Description
Fourier transform infrared spectrometer is abbreviated as FTIR. It is different from the principle of dispersive infrared spectroscopy. It is an infrared spectrometer developed based on the principle of Fourier transform of infrared light after interference. It is mainly composed of infrared light source, interferometer, sample chamber, detector amplifier, and analog-to-digital converter (A/D), computer composition. It can carry out qualitative and quantitative analysis of samples, and is widely used in the fields of medicine and chemical industry, geology and mining, petroleum, coal, environmental protection, customs, gem identification, criminal investigation identification, etc.
- Advantages of Fourier Transform Infrared Spectrometer
- Why would we rather use FTIR instruments than dispersive ones? There are three major advantages of FT instruments.
- 1.Multiplex: since all wavelength are measured simultaneously ,the measurement time is greatly reduced.
- 2.Throughput: FT instruments don’t use slits, therefore the amount of light entering into the instrument is much larger, and the measurement is less sensitive to noise.
- 3.Connes’: since we use an extremely accurate laser for the position determination of the mirror, the precision is very high, better than 0.01 cm-1. This is better for quantitative analysis and library searching.
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