Depuration and uptake kinetics of I, Cs, Mn, Zn and Cd by the earthworm (lumbricus terrestris) in radiotracer-spiked litter

摘要

The relative depuration and uptake kinetics of contaminants should be known to interpret appropriately the use of organisms such as earthworms in environmental bioassays and monitoring. For example, 14-d earthworm bioassays should be interpreted with the knowledge that some contaminants will continue to accumulate in tissues for months. The radiotracers ~125I, ~134Cs, ~54Mn, ~65Zn, and ~109Cd were applied to deciduous litter and specimens of Lumbricus terrestris were exposed, either to litter alone or to litter on the top of soil columns.