I have analysed infant milk powder with Raman microscopy. However, the Raman shift (cm-1) is very high and it's not what I was looking for. Usually the Raman shifts of milk powder is between 400 cm-1 and 4000 cm-1 and this is beyond those number. What went wrong? I am also sure that the unit is cm-1 and not something else.
Check https://www.researchgate.net/publication/45187406_Raman_spectroscopic_quantification_of_milk_powder_constituents
Hi. See the link :
https://www.cnlabglassware.com/zhan/raman-spectroscopy-common-problem-highlights.html
I mainly analysed NIR spectra. If your sample preparation was good and no other contamination then something internal to the sample may be causing these features. To start with take first differences and see what kind of features are these. Alternatively just cumulate your spectral values and plot again (extreme parts should show up better...
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