Accumulation of hydrophobic compounds in the soil lipidic and humic fractions as result of a long term land treatment with olive oil mill effluents (alpechin)

Land treatment with high loading rates of olive oil mill effluents (alpechin) results in the quantitative increase of the lipidic fraction of the soil upper layer and in significative alterations in the lipid compositions of both the soil upper layer and the subsoil. GC-MS analysis of the lipidic fractions before and after the treatments showed the preferential accumulation of some hydrophobic components of the wastewater. These compounds were also retained by the humic acid (HA) fractions as seen by Pyrolysis-GC-MS.