PCB congeners and hexachlorobenzene biota sediment accumulation factors for Macoma nasuta exposed to sediments with different total organic carbon contents
- Environmental Protection Agency, Newport, OR (United States). Pacific Ecosystems Branch
- AScI, Newport, OR (United States). Hatfield Marine Science Center
Deposit-feeding marine clams (Macoma nasuta) were exposed for 119 d to three sediment types that varied in total organic carbon (TOC) from 0.8 to 2.5%. Sediments were spiked with equal concentrations of 13 polychlorinated biphenyl congeners and hexachlorobenzene. Tissue residues were measured, and steady-state bioaccumulation factors (BAFs), the corresponding lipid, and TOC-normalized biota sediment accumulation factors (BSAFs) were determined. The BSAFs were less variable than were the BAFs with the exception of compounds with log K[sub ow] > 7. Many of the BSAFs exceeded 1.7, which is a calculated maximum value based on partitioning alone. Although BSAFs varied with sediment type and compound, the use of a BSAF of 4 as a screening level for neutral organic compounds in assessing dredge materials is supported by the present study.
- OSTI ID:
- 6524657
- Journal Information:
- Environmental Toxicology and Chemistry; (United States), Vol. 14:2; ISSN 0730-7268
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CHLORINATED AROMATIC HYDROCARBONS
BIOLOGICAL ACCUMULATION
CLAMS
SENSITIVITY
SEDIMENTS
CONTAMINATION
POLYCHLORINATED BIPHENYLS
WATER POLLUTION
ANIMALS
AQUATIC ORGANISMS
AROMATICS
HALOGENATED AROMATIC HYDROCARBONS
INVERTEBRATES
MOLLUSCS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POLLUTION
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)
560300 - Chemicals Metabolism & Toxicology