In this
section
we focus
on
visual
interpretation
of spectral
characteristic (Figs. 1 and 2) in combination with wet chemical
analyses (Tables 3 and 4) and in a second step the spectra were
used to develop prediction models for ammonium, nitrate, sulfate
and dissolved organic carbon (see section 3.2). In Fig. 1 selected
spectra reflect different degrees of decomposition of both aerated
and anaerobic solid waste materials from lab-scale experiments.
The selection of the spectra was done with the intent to show a
broad variation of the appearing absorption bands of the investigated
leachate samples. Leachate from aerated waste material