Diffusion of Labelled Heavy Metals into River Elbe Sediments

摘要

Six sediment cores were taken from the banks of the river Elbe (km 594) and the penetration of Hg-203, Cd-109, Cs-137, Mn-54, and Fe-59 over a period of 10 days was investigated. The cores were taken in pairs from three different locations. From each pair one sample was analysed under aerobic and the other under anaerobic conditions. Under anaerobic conditions the tracers penetrate further into the core than under aerobic conditions. The diffusion coefficients estimated ranged from 10 exp -7 cm exp 2 /s for Cd down to 7 x 10 exp -8 cm exp 2 /s for the other nuclides. (ERA citation 10:042957)