The flux of tributyltin(TBT) from contaminated sediment was estimated
using a him transfer model. Mass transfer coefficient was around 10(-6
) (m/sec) and showed diversity according to the turbulence of overlayi
ng water. Release to the overlaying water and degradation in the sedim
ent itself were compared in regard to contributions to removal of TBT
from sediment. Releases are greater when sediment has a large porosity
, whereas degradation tends to contribute more with rather smaller por
osity.