Such a deconvolution is usually performed in case of spectra that have been converted to transmittance absorbance or reflectance absorbance. To a certain degree it may be possible to find the number of bands and their positions if these overlap. I would suggest not to interpret or compare band areas etc. The reason for this is that the way absorbance is calculated from transmittance or reflectance is not compatible with Maxwell's equations (see 1st link). A way that ensures compatibility is to analyze transmittance or reflectance spectra by disperison analysis with a meaningfully adapted optical model (see e.g. 2nd link).
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Mr. N,
There is better to use Grams AI (https://www.thermofisher.com/order/catalog/product/INF-15000).
Concerning the interpretation of band fits, this paper might be helpful:
Article Quantitative Evaluation of Infrared Absorbance Spectra – Lor...
N.Hari Prakash Deconvolution of a composite peak into its individual peaks plays an important role in the interpretation of many types of graphs including XRD, XPS, FTIR, and PL etc. In this video, I have discussed how to deconvolute simple combined peaks, composite peaks and how to correct missing data in a given peak with the help of deconvolution in OriginLab. In the case you want to further ask about it, please do comment on the specific video, I'll respond to it shortly. I have provided the practice files (OriginLab) here. Thanks
https://youtu.be/WX_X3XlbKRA
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