Accumulation of Heavy Metals in OilContaminated Peat Soils

Xray fluorescence and Xray radiometry repres ent easy and simple methods to determine con� centrations of heavy metals in the ash of peat soils contaminated with oil and can be applied for soil monitor� ing purposes. Oil spills on peat bogs produce two contamination zones differing in the composition of heavy metals. In the zone of primary contamination, the peat surface is covered by a bitumen crust with V, Ni, Sr, Ba, Ce, and La accumulating there. This zone adjoins the zone of secondary peat contamination, where heavy alkalineearth metals (Sr, Ba) and lanthanides (C e and La) are accumulated to a lesser extent. Biolog� ical preparations recommended for remediation of oilcontaminated peat soils should be tolerant to high concentrations of heavy metals, particularly, V, Ni, and Ba that are present in the oil contaminated soils in relatively high amounts.