Uptake and elimination of PCDD/PCDF congeners by fish after aqueous exposure to a fly-ash extract from a monicipal incimerator

Abstract

After aqueous exposure of fish to a fly-ash extract only a few highly chlorinated dibenzo-p-dioxins and dibenzofurans are accumulated. The estimated uptake rate constants of the accumulated congeners are comparable to those of PCB's or other hydrophobic chemicals. The elimination rate constants however seem to be relatively high. For the 2,3,7,8 TeCDD and 2,3,7,8 TeCDF a slow elimination is found if compared to other PCDD's and PCDF's. © 1986.