dissolved organic matter spectra of soil amended with Organic fraction of municipal solid waste, before and after the experiment (Fig. 3c,d), were very similar but different from those of the control soil. dissolved organic matter were composed primarily of small or branched aliphatic
molecules and carbohydrate structures In particular, the very intense peak around
1590 cm1 attributed to the carboxylate asymmetrical stretching indicated the high presence of
carboxylic acids