Record Display for the EPA National Library CatalogRECORD NUMBER: 21 OF 28
|Main Title||Modeling the Partitioning and Bioaccumulation of TCDD and Other Hydrophobic Organic Chemicals in Lake Ontario.|
|Author||Endicott, D. D. ; Cook., P. M. ;|
|CORP Author||Environmental Research Lab.-Duluth, MN.|
|Additional Subjects||Water pollution effects(Animals) ; Computerized simulation ; Models ; Chlorinated aromatic hydrocarbons ; Biota ; Lake Ontario ; Dioxin ; Benzofurans ; Bioaccumulation ; Sediment-water interfaces ; Aquatic ecosystems ; Concentration(Composition) ; Fresh water fishes ; Trout ; Reprint ; BSR(Biota-to-sediment ratio) ; HOCs(Hydrophobic organic chemicals) ; PCDDs(Polychlorinated dibenzo-p-dioxins) ; PCDFs(Polychlorinated dibenzofurans) ; Salvelinus namaycush ; Translations|
Lake trout and sediment data were used to define the biota-to-sediment ratio (BSR) for hydrophobic organic chemicals (HOCs) in Lake Ontario, including 2,3,7,8-substituted polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs). The BSRs for bioaccumulative PCDD/PCDFs were found to be approximately two orders of magnitude (i.e., 100x) lower than for other HOCs of similar hydrophobicity. To evaluate this difference, a modeling framework is applied which accounts for the significant processes affecting BSR: bioaccumulation, partitioning, and sediment-water chemical distribution.