Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in marine mussels from French coasts: levels, patterns and temporal trends from 1981 to 2005.

摘要: The levels and temporal trends of toxic polychlorinated dibenzo-p-dioxins (PCDDs) dibenzofurans (PCDFs) were determined in archived marine mussels collected between 1981 2005 from selected sites along French coasts. geographical distribution PCDD/Fs generally reflect regional inputs these contaminants: the highest concentrations samples Seine river estuary (English Channel) Toulon area (Mediterranean coast); lowest Corsica Sea). PCDD/F isomeric composition showed a fairly homogeneous pattern throughout various sampling sites. This pattern, dominated by 2,3,7,8-TCDF OCDD, can be considered as typical for study species. However, on more local scale, some differences identified relation to source characteristics. time trend pronounced decrease over 24-year period at most sites, except Mediterranean Sea, where was not significant. overall probably reflects general drop emissions Europe since 1980. high recent years (1999, 2001 2005) mouth river. These are related particular hydrological conditions, intensive sediment dredging due new port construction estuary. results presented this paper provide reference data contamination shellfish persistent organic pollutants environment.