Influence of particle surfaces on the bioavailability to different species of 2,4-dichlorophenol and pentachlorophenol
- Univ. of Reading (United Kingdom). School of Animal and Microbial Sciences
Studies on the bioavailability of contaminants that accumulate in sediments have been complicated by the chemical and structural variability of substrates and by the different biological properties of test organisms that are used by regulators. The purpose of this work was to overcome some of these difficulties by devising a test system that used artificial particles with known chemical surfaces. These were coated with 2,4-dichlorophenol or pentachlorophenol and fed to oligochete worms (Lumbriculus variegatus) and midge larvae (Chironimus riparius). The adsorption coefficient (K[sub d]) of the particle surface was compared with the concentration of contaminant accumulated by the test organisms. There were major differences in bioaccumulation between the two species used despite identical particles and pollutants. This clearly reflects differences in the uptake and detoxification pathways between species. The particle surface and its interaction with the chlorophenols was a major factor in the accumulation of the contaminants in an organism. The techniques that are described provide a way of standardizing results between different natural sediments and different test organisms and provide some insights into the processes involved in bioaccumulation from particle surfaces.
- OSTI ID:
- 6428237
- Journal Information:
- Environmental Science and Technology, Vol. 33:14; ISSN 0013-936X
- 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.
ANNELIDS
AQUATIC ORGANISMS
BIOLOGICAL ACCUMULATION
BIOLOGICAL AVAILABILITY
BIOLOGICAL INDICATORS
CHLORINATED AROMATIC HYDROCARBONS
FLIES
SEDIMENTS
WATER POLLUTION
ANIMALS
AROMATICS
ARTHROPODS
DIPTERA
HALOGENATED AROMATIC HYDROCARBONS
INSECTS
INVERTEBRATES
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POLLUTION
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)
560300 - Chemicals Metabolism & Toxicology