Numerical simulation of organic chemicals in a marine environment using a coupled 3D hydrodynamic and ecotoxicological model.
For ecotoxicological risk assessment in a marine ecosystem, we constructed a coupled three-dimensional hydrodynamic and ecotoxicological model (EMT-3D), and applied it to Tokyo Bay. The model was calibrated with field data obtained in 2002. The results of sensitivity analysis for dissolved Bisphenol A showed that biodegradation rate was the most important factor for concentration change. Bioconcentration coefficient was the most important factor for Bisphenol A in phytoplankton. Therefore, the parameters must be carefully considered in the modeling. The mass balance results showed that standing stocks of Bisphenol A in water, in particulate organic carbon and in phytoplankton are 7.85 x 10(4), 1.78 x 10(2) and 3.44 x 10(-1) g, respectively. With respect to flux, biodegradation in the water column had the highest value of 1.06 x 10(3) g/day, and next were effluent to the open sea, partition to particulate organic carbon, and bioconcentration in phytoplankton.
Kim
Dong-Myung
DM
Research Center for Environmental Risk, The National Institute for Environmental Studies, 16-2, Onogawa, Tsukuba, Ibaraki 305-8506, Japan. kim.dongmyung@nies.go.jp
Nakada
Norihide
N
Horiguchi
Toshihiro
T
Takada
Hideshige
H
Shiraishi
Hiroaki
H
Nakasugi
Osami
O
D001559:Benzhydryl Compounds; D001673:Biodegradation, Environmental; D003198:Computer Simulation; D017753:Ecosystem; D015386:Hazardous Substances / Q000032:analysis*; D007564:Japan; D008956:Models, Chemical; D009792:Oceans and Seas; D009930:Organic Chemicals / Q000032:analysis*; D010636:Phenols / Q000493:pharmacokinetics / Q000633:toxicity*; D010839:Phytoplankton / Q000378:metabolism; D018570:Risk Assessment; D014872:Water Movements; D000098826:Bisphenol A Compounds
D001559:Benzhydryl Compounds; D015386:Hazardous Substances; D009930:Organic Chemicals; D010636:Phenols; C006780:bisphenol A; D000098826:Bisphenol A Compounds