How do you Deconvolute FTIR spectra?
First fix the peak positions and figure out the intensity. You then pick a few peaks to freely change the frequency and intensity of the band of interest, the result is rather reliable. Again, it is very important that you first identify the possible frequency of those peaks before you attempt deconvolution.
What information can we get from FTIR spectra?
FTIR is a rapid, nondestructive, time saving method that can detect a range of functional groups and is sensitive to changes in molecular structure. FTIR provide information on the basis of chemical composition and physical state of the whole sample (Cocchi et al. 2004).
What is the basic 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.
How do you Deconvolute FTIR spectra in origins?
Set your Goal to Fit Peaks (Pro)(available in OriginPro) to initiate the process….Fit the Peaks
- Click the Find button to find ordinary peaks.
- Uncheck the Enable Auto Find checkbox and click the Add button to manually pick missing peaks.
- Double-click on desired peak positions to add peaks and click Done.
Why is FTIR important?
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.
How do I find functional groups in FTIR?
The other common functional groups have bands between the fingerprint region and the C-H stretching absorptions. Don’t get too distracted by the mess in the fingerprint region. Instead, look primarily in the important places (between 1,500 and 2,800 cm–1, and above 3,000 cm–1).