The subject of research was pine bark (Pinus silvestris L.) (at age 17-45 years) and soil from several forest sections of the Moracz Forest District. Both in bark and in soil different contents of organochlorine pesticides were found. Among HCH izomers, γ-HCH (lindan) was distinguished by the highest contents in all samples collection sites. Its maximum level in bark (60.1±80.6 µg·kg^-1 d.m.) was observed in the surroundings of Przybiernów village (section 617), while in soil – 8.2±4.9 µg·kg^-1 d.m., in former Przybiernów state-owned farmlands. In the bark of pines growing on the border of farmlands of Przybiernów village the most of ΣHCH residues was stated (156.8 µg·kg^-1 d.m.), instead in the soil near Moracz village – 9.6 µg·kg^-1 d.m. and in the surroundings of the Rokita railway station – 10.4 µg·kg^-1 d.m. The most of ΣDDT residues were found in the surroundings of the Moracz village, where the maximum contents in the soil – 159.5 µg·kg^-1 d.m. and in the pine bark – 252.2 µg·kg^-1 d.m. were stated. Within the whole examined area, both in bark and in soil, the greatest percentage participation among izomers and DDT metabolites obtained pp'-DDT (over 40%).

135-146