Sixteen polycyclic arom. hydrocarbons (PAH) were detd. in industrial sewage sludges from PKN Orlen, Plock, PL, in 2002-2004 and in 11 mono and dicotyledonous plants growing on the sludges. The sludges contained up to 1639 mu g/kg of total PAH (main component benzo[ghi] perylene up to 555 mu g/kg). The highest content of total PAH (377 mu g/kg) was obsd. in yarrow (mainly phenanthrene 90 mu g/kg). The dicotyledonous plants showed higher ability to accumulation of PAH comparing to monocotyledonous ones. The 3 and 4 ring PAH were accumulated more intensive than the 5 and 6 ring PAH.