The bioaccumulation of polynuclear aromatic hydrocarbons by benthic invertebrates in an intertidal marsh
Journal Article
·
· Environmental Toxicology and Chemistry
- Univ. of California, Berkeley, CA (United States). Dept. of Civil and Environmental Engineering
Biota-sediment accumulation factors (BSAF; concentration in organism lipid/concentration in sediment on an organic carbon basis) of polyaromatic hydrocarbons varied with season and along an intertidal gradient in a coastal marsh in San Francisco Bay. The BSAFs were lowest during the local rainy season. During the dry season, BSAFs were lowest in the high intertidal zone closest to shore. Significant differences among species groups were also observed; BSAFs were lowest in polychaetes and highest in the Asian clam (Potamocorbula amurensis), varying over almost three orders of magnitude. The BSAFs decreased with increasing percent fines in the sediments and with PAH concentrations on an organic carbon basis. The authors suggest that a determining variable is the content of highly aromatic soot particles, which increases during periods of surface runoff and which is expected in the dry season to be highest in the high intertidal zone where these finer particles preferentially accumulate. Correlations of BSAFs with the ratio of the logarithm of the activity coefficients in porewaters to those in sediments were generally stronger than with log K{sub ow}, indicating a limitation of octanol as a surrogate for sediment organic carbon or organism lipid. These observations qualify but also strengthen the concept of equilibrium partitioning as the determining factor in bioaccumulation by benthic organisms of nonpolar organic compounds for sediments; the assumption that organic carbon can be considered in generic terms without allowance for aromaticity and probably other factors as well, must, however, be reconsidered.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 514590
- Journal Information:
- Environmental Toxicology and Chemistry, Journal Name: Environmental Toxicology and Chemistry Journal Issue: 6 Vol. 16; ISSN ETOCDK; ISSN 0730-7268
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sediment-porewater-biota partitioning of polynuclear aromatic hydrocarbons in an urban intertidal marsh
Uncertainty analysis for an equilibrium partitioning-based estimator of polynuclear aromatic hydrocarbon bioaccumulation potential in sediments
Equilibrium partitioning and bioaccumulation of sediment-associated contaminants by infaunal organisms
Conference
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:458311
Uncertainty analysis for an equilibrium partitioning-based estimator of polynuclear aromatic hydrocarbon bioaccumulation potential in sediments
Journal Article
·
Mon Jan 31 23:00:00 EST 2000
· Environmental Toxicology and Chemistry
·
OSTI ID:20075818
Equilibrium partitioning and bioaccumulation of sediment-associated contaminants by infaunal organisms
Technical Report
·
Sat Dec 31 23:00:00 EST 1988
·
OSTI ID:6404209