Results of examinations on the amount, and spatial distribution of heavy metal compounds in the soil
of Debrecen, their geographic, pedologic and ecologic aspects are presented in this study. The effects
of the differences in traffic conditions, build-up/land use and the density of vegetation on the heavy
metal content of the soils have been examined in city of Debrecen and its closer environment.
Cadmium-, cobalt-, nickel-, lead-, and copper-contents of the soil samples taken from 88 sites of the
sample area have been studied after acidic extraction, using atomic absorption spectrometer with the
flame technique. Close-to-background concentrations of heavy metals in unpolluted soils of the
forested area of the Nagyerdő were determined. Spatial differences in the heavy metal content of the
soils for the whole area of Debrecen have been studied. Influence of soil properties (humus, CalciumCarbonate content, pH and grain-size distribution) on the binding and mobility of heavy metals in the
soil has been examined. Vertical distribution and mobility of heavy metal compounds in acid sandy
soils was determined. Heavy metal content of soil in the most sensitive areas, playgrounds,
recreational areas, urban gardens and grazing fields along busy roads has been surveyed.