“…Venerupis decussata (a marine clam) exposed to 81.4-2470 ng/l of TBT in a daily renewal protocol could reach a steady state within 40 days (Gomez-Ariza et al, 1999); the filter feeding Dreissena polymorha (a freshwater mussel) exposed to 80 ng/l of TBTCl under field conditions reached a steady state after 35 days (Van Slooten and Tarradellas, 1994); M. galloprovincialis (a marine mussels) under both field experiments exposed to 450 ng/l and a flow-through system exposed to 80 and 200 ng/l reached a steady state after 60 days (Vaikirs et al, 1987). Huang, using a flow through system, reported that TBT in tissues of M. edulis reached a steady state only when mussels were exposed to TBT concentration lower than 500 ng/l (Huang and Wang, 1995).…”