Decreasing lead concentration in whole blood since the Lead-in Petrol Act became effective.
Considerable differences in contamination between a region with high anthropogenic impact and a semi-natural environment
Decreasing sulfur levels since the German re-unification
Sampling of bream have been started mid of July and will be completed end of September the latest. Sampling sites are the rivers Saar, Rhine, Elbe with its tributaries Saale and Mulde, and the Danube.