Use of Iron (II) Salts and Complexes for the Production of Soil Amendments from Organic Solid Wastes
Figure 1
GC chromatograms of the non polar dissolved organic matter extracted in n-hexane from composts C1 (a) and C4 (b). Some of the classes of the functional groups are reported here as a function of the retention time (minutes): up to 32′ we have terpene, decanoic, dodecanoic, and tetradecanoic acids, and tetradecenal. The remaining peaks were attributed to C16–C18 fatty acids and relative esters. At 50′ squalene was found. It can be seen that the region at low retention times in chromatogram (b) is more crowded than in (a).
