Infrared spectroscopy - FTIR spectroscopy
FTIR spectroscopy is a variant of infrared spectroscopy. FTIR spectrometers offer some decisive advantages over the dispersive spectrometers that were previously used. For example, FTIR spectrometers have a significantly higher signal-to-noise ratio and require considerably shorter measurement times. Results of infrared spectroscopy are presented in infrared spectrography.
The Fourier transform is used to break down aperiodic signals into a continuous spectrum.
| investigation method | Infrared spectroscopy – FTIR spectroscopy |
| abbreviation | FTIR |
| Device type and equipment | Perkin Elmer Spectrum 100 FTIR spectrometer / Perkin Elmer Spectrum Spotlight 200 FTIR microscope |
| functional principle | The absorption of infrared radiation changes the rotational and vibrational energies of molecules. The IR spectrum reflects the chemical composition. |
| Typical applications | Structure elucidation, determination of ingredients, microanalysis, forensics, surface analysis (e.g. of catalysts) |
| measurement technology | ATR (attenuated total reflection), µATR, reflection, transmission |
| Requirements for sample | few mg (spectrometer), few µg (microscope) |
Example applications for FTIR analyses
FTIR for pharmaceutical and chemical industries
Find out more about our expertise in the area of CRO
FTIR for polymer analysis
An overview of further methods in the field of polymer analysis can be found under the competence – polymer analysis.
