Model of PCB in the Lake Michigan lake trout food chain
An age-dependent food chain model that considers species bioenergetics and toxicant exposure through water and food is developed. The model is successfully calibrated to 1971 PCB concentrations of Lake Michigan alewife and lake trout by using a dissolved PCB concentration in the water of 5-10 ng/L. The model indicates that for the top predator lake trout, PCB exposure through the food chain can account for greater than 99% of the observed concentration. An octanol-water partitioning calculation using a coefficient of 10/sup 6.72/ and lake trout lipid concentrations failed to reproduce the observed data by a factor of about 4. It is estimated that a criterion specifying that PCB concentrations of all ages of lake trout be at or below 5 ..mu..g/g (wet weight) in the edible portion would require that dissolved PCB concentrations be reduced to somewhere between 0.5 and 2.5 ng/L.
- Research Organization:
- Manhattan Coll., Bronx, NY
- OSTI ID:
- 7096458
- Journal Information:
- Environ. Sci. Technol.; (United States), Vol. 18:2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Evidence that PCBs are approaching stable concentrations in Lake Michigan fishes
Size-specific mortality in fry of lake trout (Salvelinus namaycush) from Lake Michigan
Related Subjects
CHLORINATED AROMATIC HYDROCARBONS
BIOLOGICAL ACCUMULATION
CONCENTRATION RATIO
UPTAKE
FOOD CHAINS
MATHEMATICAL MODELS
LAKE MICHIGAN
TROUT
ANIMALS
AQUATIC ORGANISMS
AROMATICS
FISHES
GREAT LAKES
HALOGENATED AROMATIC HYDROCARBONS
LAKES
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
SURFACE WATERS
VERTEBRATES
560305* - Chemicals Metabolism & Toxicology- Vertebrates- (-1987)