Chromium And Atrazine Contamination Of The Ljubljansko Polje Aquifer

摘要

Contamination of the Ljubljansko Polje aquifer with Cr+6 dating to 1986 is considered to be one of the best-investigated groundwater pollutions in Slovenia. The contamination put a halt to water pumping in one of the wells for water supply in the Kle?e pumping station, this being the major pumping field of the municipal company for water supply. Chemical analyses of Cr+6 were carried out for almost each groundwater sampling in Ljubljansko Polje aquifer and a large amount of data has been made available. In-depth investigation and pollution modelling was carried out and several papers were published on the subject. Contamination is a good tracer, which gives data on groundwater flow, hydrodynamics dispersion and leaching-out of pollution. The contamination in the most polluted pumping field of Kle?e is today below the limit of chemical detection. Nowadays, highest degrees of aquifer pollution are identified south of the Hrastje pumping station. Furthermore, contamination by atrazine is also discussed.