Transformation of Polycyclic Aromatic Hydrocarbons at Degradation of Petroleum in Soil

I. I. Mustafayev, N. A. Ibadov, N. G. Guliyeva, and Sh. H. Hajiyev

Institute of Radiation Problems of Azerbaijan National Academy of Sciences, Azerbaijan

Abstract: The content of oil, tar and asphaltene fractions in crude and degraded in soil petroleum from Surakhani oil fields of Absheron has been determined. The regularities of distribution of polycyclic aromatic hydrocarbons (PAH) in oil and tar fractions of crude and degraded in soil petroleum have been studied. Three groups of PAH – containing 2-6 benzene rings, NPD (Naphthalene, Phenanthrene- Dibenzo(ah)anthracene ) and 16 ЕРА have been considered. It is shown that within the transition from oil fraction to tar the content of 2-6 PAH increases by 45%, 16 ЕРА – by 33.6% and NPD – by 38,5%. Besides the sharply increase of the content of the asphaltene fraction within the degradation of oil in soil, the content of the identified PAH decreases both in oil and tar fractions.

Key words: petroleum, soil, degradation, PAC