What is FTIR principle?
FTIR spectrometers rely on the same basic principle as NDIR analyzers, i.e., the fact that many gases absorb IR radiation at species-specific frequencies. The IR beams passes through an interferometer, which consists of a beam splitter, a fixed mirror and a moving mirror.
What is the difference between FTIR and Ftnir?
FT-NIR instruments utilize the same method as FTIR with the difference that their source is more suitable for near infrared measurements. FTIR typically uses a Silicon Carbide source which peaks at nearly 5 m as compared to FT-NIR which uses QTH lamps which peak at nearly 2 m.
Can FTIR detect metals?
The Agilent Handheld FTIR system, equipped with grazing angle sample optics, can provide the level of sensitivity required for the detection and identification of a large number of organic and inorganic contaminants on metal surfaces.
What is the range of FTIR?
4,000 to 400 cm-1
Fourier Transform Infrared spectrophotometers (FTIR) are mainly used to measure light absorption of so-called mid-infrared light, light in the wavenumber range of 4,000 to 400 cm-1 (wavelengths 2.5 to 25 µm), in order to identify and quantify various materials.
How do I read a FTIR report?
How to Read FTIR Results Graphs
- The X-Axis: The Infrared Spectrum. The x-axis—or horizontal axis—represents the infrared spectrum, which plots the intensity of infrared spectra.
- The Y-Axis: Absorbance or Frequency.
- The Absorbance Bands.
Why FTIR is called Fourier Transform?
An FTIR spectrometer simultaneously collects high-resolution spectral data over a wide spectral range. The term Fourier-transform infrared spectroscopy originates from the fact that a Fourier transform (a mathematical process) is required to convert the raw data into the actual spectrum.
What is full form of FTIR?
Fourier Transform Infrared Spectroscopy (FTIR) identifies chemical bonds in a molecule by producing an infrared absorption spectrum. The spectra produce a profile of the sample, a distinctive molecular fingerprint that can be used to screen and scan samples for many different components.