What does FT NIR mean?

Fourier transform near-infrared spectroscopy
Fourier transform near-infrared spectroscopy (FT-NIR) is a non-destructive chemical analysis technology that provides a means to identify and analyze various materials.

What is the difference between NIR and FTIR?

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.

How FTIR is superior technique compared to dispersive IR?

An FT-IR instrument does not use a slit to limit the individual frequency reaching the sample and detector as a dispersive instrument does. This means that the signal-to-noise ratio of an infrared spectrum measured on an FT-IR is higher than the signal-to-noise ratio attained on a dispersive instrument.

What is dispersive spectrophotometer?

As the name suggests, dispersive spectrometers generate spectra by optically dispersing the incoming radiation into its frequency or spectral components, as illustrated in the figure below. Common dispersive elements include prisms and gratings. Schematics of a monochromator; a dispersive spectrometer.

What is NIR used for?

NIR spectroscopy can be used for product identification, classification and quality control, as well as for the determination of product properties (chemical and physical) and component concentrations in process applications, all with the object of rapid analysis.

Why we are using KBr in FTIR?

KBr is used as a carrier for the sample in IR spectrum and it is optically transparent for the light in the range of IR measurement. So that no interference in absorbence would occur. KBr, has a transmittance of 100 % in the range of wave number (4000-400 cm-1). Therefore, it does not exhibit absorption in this range .

What is NIR spectroscopy used for?

How does FT NIR spectroscopy work?

Principle and Advantages of FT-NIR Spectroscopy When a sample is irradiated with NIR light, the absorbs the light and the matching molecular vibrations are activated. The outcome is a NIR spectrum containing absorption bands of varying molecular groups (predominantly N-H, C-H, and O-H bonds) at typical wavelengths.

What does FT NIR mean? Fourier transform near-infrared spectroscopy Fourier transform near-infrared spectroscopy (FT-NIR) is a non-destructive chemical analysis technology that provides a means to identify and analyze various materials. What is the difference between NIR and FTIR? FT-NIR instruments utilize the same method as FTIR with the difference that their source is more suitable…