Polyaromatic hydrocarbons in the Ostrava region

The polycyclic aromatic hydrocarbons cause a big safety risk and encumbrance for natural ecosystems and exposed human population because of their physical and chemical properties and the high - level toxicity. One of the important mechanisms of their transport is spreading by the rivers together with the surface water. The region of Ostrava with environs belongs to the most affected areas polluted by PAH's in Czech Republic. Despite of the decline of industry works and acceptance of more effective preventive measures and procedures of recovery, the concentrations of PAH's doesn't decrease in water in the region. It's particularly a consequence of long-term polluting of the water and atmosphere which caused the contamination of river sediments, especially near of ex-industry centers. These objects of contaminated sediments become a permanent resource of pollution for the whole area. The current source, which primary pollutes atmosphere, has a considerable part on the contamination on environment. The pollution by PAH's extensively restricts chance to use surface water and groundwater in many areas. That's the reason why it's necessary to make a steps for effective reducing pollution of surface catchment area by contaminants from old load and current sources to restrict their breakthrough into...