What are the basic parts of a FTIR spectrophotometer?

The three major parts of an FTIR are the source, interferometer, and detector (Figure 4).

What is the working principle of FTIR?

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. However, FTIR spectroscopy is a disperse method, which means that measurements are performed over a broad spectrum instead of a narrow band of frequencies.

What is FTIR spectrometer used for?

FTIR spectra reveal the composition of solids, liquids, and gases. The most common use is in the identification of unknown materials and confirmation of production materials (incoming or outgoing). The information content is very specific in most cases, permitting fine discrimination between like materials.

What is FTIR instrument?

A Fourier Transform InfraRed (FT-IR) Spectrometer is an instrument which acquires broadband Near InfraRed (NIR) to Far InfraRed (FIR) spectra. Unlike a dispersive instrument, i.e. a grating monochromator or spectrograph, FTIR spectrometers collect all wavelengths simultaneously.

What are the components present in an interferometer of a FTIR?

The Components of FTIR Spectrometers A common FTIR spectrometer consists of a source, interferometer, sample compartment, detector, amplifier, A/D convertor, and a computer. The source generates radiation which passes the sample through the interferometer and reaches the detector.

What are FTIR discs made of?

For the mid-IR region, 2−25 μm (5,000–400 cm−1), the most common source is a silicon carbide element heated to about 1,200 K (Globar). The output is similar to a blackbody. Shorter wavelengths of the near-IR, 1−2.5 μm (10,000–4,000 cm−1), require a higher temperature source, typically a tungsten-halogen lamp.

What are the types of FTIR?

There are four major sampling techniques in FTIR: Transmission. Attenuated Total Reflection (ATR) Specular Reflection.

Which of the following is used for calibration in an FTIR spectrometer?

Standard operating procedure to calibrate the Fourier Transforms Infra Red Spectrometer using polystyrene film.

What are the components of FTIR spectrophotometer?

FTIR Spectrometers 1 The Components of FTIR Spectrometers. A common FTIR spectrometer consists of a source, interferometer, sample compartment, detector, amplifier, A/D convertor, and a computer. 2 Michelson Interferometer. 3 Fourier Transform of Interferogram to Spectrum. 4 Hands-on Operation of an FTIR Spectrometer

What is a Fourier transform infrared spectrophotometer?

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.

What is ftftir and how is it performed?

FTIR is performed to measure the chemical structure of the UHMWPE. FTIR can be performed on either the UHMWPE powder using the potassium bromide (KBr) pellet technique, or on the consolidated UHMWPE.

How many generations of IR spectrometers are there?

Up till FTIR spectrometers, there have been three generations of IR spectrometers. The first generation IR spectrometer was invented in late 1950s. It utilizes prism optical splitting system. The second generation IR spectrometer was introduced to the world in 1960s. It utilizes gratings as the monochrometer.