title: The Elbe flood in August 2002--organic contaminants in sediment samples taken after the flood event.
abstract: In the course of this study 37 sediment samples were analyzed. They were taken after the flooding in September 2002 along the Elbe and at the mouths of its major tributaries. The sampling program covered the entire river stretch that was affected by the floods, from Obristvi (Czech Republic) to the Elbe estuary (North Sea) on the German coast. Analyses were performed for dioxins, nonylphenols, nonylphenol ethoxylates, bisphenol A, DEHP, musk fragrances, polybrominated diphenylethers, chloroalkylphosphates, organochlorine compounds, PAH, and organotin compounds. The results show that only a few weeks after the flood, contaminant concentrations in solid matter were comparable to those prevailing beforehand. Significant sources of contaminant input proved to be the tributaries Vltava (Moldau), Bilina (both in the Czech Republic), and the Mulde (Germany), as well as industrial and municipal sewage treatment works (STW) located along the Elbe. Further point sources are to be found in still water zones such as harbors and abandoned channels. These sources are activated when erosive action stirs up older sediments. Statistical analyses of the congener distribution of the dioxins provided evidence on the sources of these contaminants and freight levels in different river sections. The chemical analyses were complemented by results of ecotoxicological investigations with two sediment organisms (Chironomus riparius and Potamopyrgus antipodarum).
authors.affiliation: Wassergütestelle Elbe der Arbeitsgemeinschaft für die Reinhaltung der Elbe, Hamburg, Germany. burkhard.stachel@bsu.hamburg.de
authors.forename: Burkhard
authors.initials: B
authors.lastname: Stachel
authors.forename: Eckard
authors.initials: E
authors.lastname: Jantzen
authors.forename: Wilhelm
authors.initials: W
authors.lastname: Knoth
authors.forename: Frank
authors.initials: F
authors.lastname: Krüger
authors.forename: Peter
authors.initials: P
authors.lastname: Lepom
authors.forename: Matthias
authors.initials: M
authors.lastname: Oetken
authors.forename: Heinrich
authors.initials: H
authors.lastname: Reincke
authors.forename: Georg
authors.initials: G
authors.lastname: Sawal
authors.forename: René
authors.initials: R
authors.lastname: Schwartz
authors.forename: Steffen
authors.initials: S
authors.lastname: Uhlig
mesh_terms: D000818:Animals; D002683:Chironomidae; D018153:Czech Republic; D004190:Disasters; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry; D005858:Germany; D008974:Mollusca; D009659:North Sea; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000633:toxicity
chemical_list: D014874:Water Pollutants, Chemical