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Influence of organic matter quality on the toxicity and partitioning of sediment-associated fluoranthene

Technical Report ·
OSTI ID:6373564
; ; ; ;

Organic matter in sediment is derived from many sources, including dead plants and animals, fecal matter, and flocculated colloidal organic matter. Chemical partitioning and toxicity of nonpolar organic contaminants is strongly affected by the quantity of sediment organic matter. The purpose of the study was to determine whether the quality of sediment organic matter affects partitioning and bioavailability of such contaminants. A base substrate, amended to a consistent organic carbon level (nominally 0.4%, measured 0.35% + or - 0.11 sd POC (particulate organic carbon)) with five types of organic matter (a macrophyte, fecal matter of two invertebrate species, suspended particulate organic matter, and an organic-rich mud), was spiked with serial concentrations of the polynuclear aromatic hydrocarbon, fluoranthene. After a five-week equilibration period, the toxicity of the spiked substrates to an infaunal amphipod, Rhepoxynius abronius, was measured, and the distribution of fluoranthene between particulate and interstitial water phases (including total and freely dissolved interstitial water phases) was determined.

Research Organization:
Oregon State Univ., Newport, OR (United States). Hatfield Marine Science Center
OSTI ID:
6373564
Report Number(s):
PB-93-185874/XAB; CNN: EPA-68-C0-0051
Country of Publication:
United States
Language:
English

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Related Subjects

54 ENVIRONMENTAL SCIENCES
540350 -- Environment
Aquatic-- Site Resource & Use Studies-- (1990-)
560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AROMATICS
BIOCHEMISTRY
CARBON
CHEMISTRY
CONDENSED AROMATICS
DISTRIBUTION
ELEMENTS
FUNCTIONS
GROUND WATER
HYDROGEN COMPOUNDS
INTERSTITIAL WATER
MATERIALS
MATTER
NONMETALS
ORGANIC COMPOUNDS
ORGANIC MATTER
OXYGEN COMPOUNDS
PARTITION FUNCTIONS
PLANTS
POLLUTION
SEDIMENTS
SEPARATION PROCESSES
SUBSTRATES
TOXICITY
WATER
WATER POLLUTION