Heavy metal status of soils in the urban area of Rostock different in use

摘要

In order to assess possible risks for crop gowth and human nutrition, the concentrations of Pb, Zn, Cd, Gu (aqua-regia digestion) were determined in 180 soil samples from the urban area of Rostock/Northeast Germany (181 km~2). The highest concentrations of heavy metals were found in garden soils and soils of residential areas which are affected by higher anthropogenic contamination. However, only a few soils have heavy metal concentrations above the threshold values applied in Germany. Soils of cityparks, shooting ranges in the outskirts and playgrounds have lower heavy metal concentrations. The concentrations correspond to the geogenetic baseline concentrations in soils of Mecklenburg-Pomerania for nearly all elements examined. No urgent nor extensive pollution with heavy metals was found in soils of Rostock.