BOGDAN CONSTANTIN CAZACU, NICOLAE BUZGAR, OVIDIU GABRIEL IANCU GEOCHEMICAL AND SPATIAL DISTRIBUTION OF HEAVY METALS IN FOREST SOILS ADJACENT TO THE TINOVUL MARE POIANA STAMPEI PEAT BOG Tinovul Mare Poiana Stampei is situated in the northern group of the Oriental Carpathians within the Dornelor Depression, one of the richest peat areas in Romania. In this study we have performed analyses of certain heavy metals (Cr, Co, Ni, Cu, Zn, Pb, As and Cd) found in the forest soils adjacent to the Tinovul Mare Poiana Stampei peat bog. The analyses performed through X-ray fluorescence spectrometry indicated the following variation limits (mg/kg): Cr: 20-66; Co: 8-29; Ni: 16-78; Cu: 16-42; Zn: 36-199; Pb: 21-229; As: 5.5-36 and Cd: 0.01-1.4. The outcomes of the present study indicate high concentrations for certain (Ni, Pb and As). These concentrations exceed the alert threshold established by the Romanian Law, according to Order no. 756 of November, 3rd 1997.
Keywords: heavy metals, soils, Poiana Stampei, pH, XRF