consequently offer many analytical challenges.The usually devel-
oped approaches are based on separative methods (liquid or gas
chromatography) often coupled to mass spectrometry (MS) [1–3].
Nevertheless, these methods imply a destructive sampling and a
wise and reasoned choice of analytical and/or pre-treatment
conditions which depend on the analyte (sample extraction and
derivatisation, column, injector, step of pyrolysis, etc.) [4,5].
In order to preserve the objects ands amples, alternative
non destructive methods can be considered such as Raman and
infrared spectroscopies.They are complementary methods as they
both provide thev ibrational signatures of the analyzed material
and thus may discriminate the organic natural media [6–10]. They
are particularly suited for the structural characterization of the
polymer network structures, and have the advantage of being
rapid and often without specific sample preparation. Moreover,
they are pertinent techniques that enable the simultaneous
investigation of the organic and mineral parts in a same sample