I can understand that observation is independent of observer, but --- my question stands on: the following -- do or can you model a set of equations that bear your findings out based upon all data collected up to this point.

If I am not mistaken, there is a major difference in C-H bending frequency in and around 3000 and the subsequent blue-shift or red-shift that may occur as a result molecular milieu

O=C=O ... on the other hand should and does have a different C=O bending / rocking motion in its spectra... I do not recall the exact frequency (?) and the subsequent blue-shift or red-shift would be different.

In regards to masking or blending of spectral bands -- it, to me, would appear to be a matter of subtracting one from the other after a thorough data reduction is performed.

In short--- do you have the numbers which bear your finding or hypothesis to be correct?

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"The candle flame gutters. Its little pool of light trembles. Darkness gathers. The demons begin to stir."
---Carl Sagan