The method of solid-phase extraction on TENAX TA beads was applied in order to assess the content of potentially bioavailable PAH fractions in soils highly contaminated with these compounds. The extraction was carried out at 20°C and 60°C to enable separation of two fractions: ,,easily bioavailable" and ,.hardly bioavailable", correspondingly. The data obtained indicated a relatively low content of potentially bioavailable PAHs in soils with 4 and 5+6-ringed compounds as dominant groups.