Baseline and Fluorescence

Most often the Raman spectra are spoilt due to a residual intensity linked with the fluorescence phenomenon. This phenomenon is undesirable in conventional Raman spectroscopy and it is necessary to remove the fluorescence background from the spectmm. For this purpose, several algorithms can be used, consisting in the subtraction of either a constant intensity value, or a linear or a polynomial baseline. 

The fluorescence phenomenon is a severe drawback for the quantitative processing of spectroscopic data. In the case of polymeric membranes, their autofluorescence is known to decrease with the following treatments [21]  

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