LITAVKA RIVER ALLUVIUM AS A MODEL AREA HEAVILY POLLUTED WITH POTENTIALLY RISK ELEMENTS

摘要

The Litavka River alluvium close to Pribram, Czech Republic, represents an area heavily polluted with risk elements. Three sources of soil pollution can be distinguished: naturally increased metal content due to specific composition of parent rocks, atmospheric deposition from a smelter, and floods of water polluted with metal-processing wastes. As such, the alluvium is an exceptional area in the Czech Republic. Therefore, many studies have been conducted there to reveal risk elements behaviour under different conditions, risk for man and for the environment, and principal factors that may take an effect. The studies have been using many different methods. This contribution presents some of these methods and their results obtained in the area. It focuses both on traditional methods and methods that are not very common or widely used. Attention is paid mainly to Ca, Pb, and Zn. A small-scale remediation experiment with different soil amendments to reduce risk element mobility and bioavailability is presented at the end.