Main Title |
Benzo(a)pyrene Accumulation and Depuration in the Soft-Shell Clam ('Mya arenaria'). |
Author |
Jackim, Eugene ;
Wilson, Laure ;
|
CORP Author |
Environmental Research Lab., Narragansett, RI. |
Year Published |
1977 |
Report Number |
EPA/600/J-77/159; |
Stock Number |
PB-299 300 |
Additional Subjects |
Clams ;
Toxicology ;
Meetings ;
Mollusca ;
Shellfish ;
Experimental data ;
Aromatic polycyclic hydrocarbons ;
Pyrenes ;
Labeled substances ;
Carbon 14 ;
Radioactive isotopes ;
Exposure ;
Toxic substances ;
Depuration ;
Bioaccumulation ;
Mya arenaria ;
Benzopyrenes
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-299 300 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
6p |
Abstract |
Three hundred clams were placed in sediment in a continuous flow seawater tank between March and June. The tank was dosed with 14C labeled benzo(a)pyrene in no. 2 fuel oil daily. Animals were removed weekly and assayed for accumulation of the radioactive material. On the sixth, thirty-third and sixty-first day of exposure animals were removed from the dosing tank, placed in sand substrate with flowing seawater for depuration and again monitored weekly for remaining radioactivity. It was found that above a large variability and fluctuation there was a gradual trend toward increased accumulation over a 90 day period. Depuration is moderately rapid and resembles a first order decay curve. Biological half-life ranged between 5.5 and 9 days. The depuration rate appeared to be somewhat slower upon prolonged accumulation. This is compared to PNA depuration rates from field animals. |