Bioavailability of fluoranthene in freshwater sediment toxicity tests
- Univ. of Mississippi, University (United States)
- EA Engineering Science and Technology, Inc., Sparks, MD (United States)
To examine equilibrium-partitioning model predictions of interstitial water concentrations of fluoranthene as part of the equilibrium-partitioning (EqP) approach to sediment quality criteria development, the bioavailability (toxicity) of fluoranthene-amended sediment to Hyalella azteca, Daphnia magna, and Chironomus tentans was determined. Fluoranthene was added to three freshwater sediments with similar organic carbon content. Predicted interstitial water concentrations from the equilibrium-partitioning model were similar to measured interstitial water concentrations for WRFS and TR sediment, but the model underpredicted measured values for LF sediment by a factor of two. EC50s for Daphnia magna, Hyalella azteca, and Chironomus tentans in interstitial water were a factor of two to five greater for LF than for WRFS and TR sediments. Factors other than organic carbon content of sediments probably contributed to the variability in bioavailability of fluoranthene. Based on 10-d sediment toxicity tests with Hylella azteca, Daphnia magna, and Chironomus tentans, organic carbon-normalized sediment concentrations were better predictors of toxicity than interstitial water and bulk sediment fluoranthene concentrations. In 10-d aqueous-phase tests with fluoranthene, Chironomus tentans and Hyalella azteca were twice as sensitive as Daphnia magna.
- OSTI ID:
- 6337700
- Journal Information:
- Environmental Toxicology and Chemistry; (United States), Vol. 12:1; 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.
CONDENSED AROMATICS
BIOLOGICAL AVAILABILITY
TOXICITY
CRUSTACEANS
SENSITIVITY
DAPHNIA
DIPTERA
SEDIMENTS
CONTAMINATION
FRESH WATER
INTERSTITIAL WATER
MATHEMATICAL MODELS
WATER POLLUTION
ANIMALS
AQUATIC ORGANISMS
AROMATICS
ARTHROPODS
BRANCHIOPODS
GROUND WATER
HYDROGEN COMPOUNDS
INSECTS
INVERTEBRATES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
WATER
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)
560300 - Chemicals Metabolism & Toxicology