FTIR Analysis (FTIR Spectroscopy) | ftir spectroscopy คือ

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FTIR Analysis (FTIR Spectroscopy)


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Fourier Transform Infrared Spectroscopy (FTIR analysis or FTIR Spectroscopy) is an analytical technique used to identify organic, polymeric, and in some cases, inorganic materials. During FTIR analysis, an absorbance spectra of the sample is created which provides information about the unique chemical bonds and molecular structure of the material.
For more information on FTIR analysis, go to http://www.labtesting.com/services/polymertesting/ftiranalysis/

FTIR Analysis (FTIR Spectroscopy)

UV Vis spectroscopy 🌟


UVVis spectroscopy
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UV Vis spectroscopy 🌟

FTIR Basics – Principles of Infrared Spectroscopy


How does FTIR spectroscopy work? In this video we show the theoretical fundamentals of infrared spectroscopy and how they are implemented in a spectrometer.
More on FTIR basics:
https://www.bruker.com/en/productsandsolutions/infraredandraman/ftirroutinespectrometer/whatisftirspectroscopy.html
More about FTIR applications:
https://www.bruker.com/en/productsandsolutions/infraredandraman/ftirroutinespectrometer.html
Interactive IR tutorial:
https://www.bruker.com/content/bruker/int/en/landingpages/bopt/irtutorial.html

FTIR Basics – Principles of Infrared Spectroscopy

TruScan RM Handheld Raman Spectrometer


Duane Sword from Thermo Fischer Scientific shows us their range of handheld FTIR and Raman spectrometers, In particular he demonstrates the TruScan RM handheld Raman and shows us how easy and fast it is to use.

TruScan RM Handheld Raman Spectrometer

Fourier Transform Infrared Spectroscopy (FTIR)


The content of this video is in the syllabus the M. Sc. Second Semester, Paper IV Unit II Part B.
Infrared spectroscopy has been a workhorse technique for materials analysis in the laboratory for over seventy years. An infrared spectrum represents a fingerprint of a sample with absorption peaks which correspond to the frequencies of vibrations between the bonds of the atoms making up the material. Because each different material is a unique combination of atoms, no two compounds produce the exact same infrared spectrum. Therefore, infrared spectroscopy can result in a positive identification (qualitative analysis) of every different kind of material. In addition, the size of the peaks in the spectrum is a direct indication of the
amount of material present. With modern software algorithms, infrared is an excellent tool for quantitative analysis.
The normal instrumental process is as follows:
1. The Source: Infrared energy is emitted from a glowing blackbody source. This beam passes through an aperture which controls the amount of energy presented to the sample (and, ultimately, to the detector).
2. The Interferometer: The beam enters the interferometer where the “spectral encoding” takes place. The resulting interferogram signal then exits the interferometer.
3. The Laser: The Laser beam also passes through the interferometer. It is used for wavelength calibration, mirror position control and data collection triggering of the spectrometer
4. The Sample: The beam enters the sample compartment where it is transmitted through or reflected off of the surface of the sample, depending on the type of analysis being accomplished. This is where specific frequencies of energy, which are uniquely characteristic of the sample, are absorbed.
5. The Detector: The beam finally passes to the detector for final measurement. The detectors used are specially designed to measure the special interferogram signal.
6. The Computer: The measured signal is digitized and sent to the computer where the Fourier transformation takes place. The final infrared spectrum is then presented to the user for interpretation and any further manipulation.
Some of the major advantages of FTIR over the dispersive technique include:
• Speed: Because all of the frequencies are measured simultaneously, most measurements by FTIR are made in a matter of seconds rather than several minutes. This is sometimes referred to as the Felgett Advantage.
• Sensitivity: Sensitivity is dramatically improved with FTIR for many reasons. The detectors employed are much more sensitive, the optical throughput is much higher (referred to as the Jacquinot Advantage) which results in much lower noise levels, and the fast scans enable the coaddition of several scans in order to reduce the random measurement noise to any desired level (referred to as signal averaging).
• Mechanical Simplicity: The moving mirror in the interferometer is the only continuously moving part in the instrument. Thus, there is very little possibility of mechanical breakdown.
• Internally Calibrated: These instruments employ a HeNe laser as an internal wavelength calibration standard (referred to as the Connes Advantage). These instruments are selfcalibrating and never need to be calibrated by the user.
ChemstarSen FTIR IRspectroscopy

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Fourier Transform Infrared Spectroscopy (FTIR)

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