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Abstract:

The uptake of anthropogenic chemicals by benthic bivalves may occur through the water phase and also by the ingestion of particles from both the suspended matter and bottom sediments. Many chemicals sorb to sediments and, subsequently, are released in the digestive tract of animals. The assessment of sediment-bound chemicals has been difficult because of the complexity of the association between these chemicals and natural particles. To simplify this complexity, we previously devised a test system using artificial particles with known chemical structures. In the present work, we improved this experimental design by adding humic materials as a source of organic matter. Bioassays were conducted by exposing the fingernail clam Sphaerium corneum to sublethal levels of pentachlorophenol (PCP) in the presence or absence of the artificial particles, treated with or without a commercial preparation of humic acids. The results showed that the bioavailability and bioaccumulation could be explained on the basis of the interactions of PCP with the active groups and/or the backbone of the resins, both in systems with or without humic acids. This model may constitute a useful approach to modeling and predicting the uptake and accumulation of chemicals bound to natural sediments.

Registro:

Documento: Artículo
Título:Modeling pentachlorophenol bioavailability and bioaccumulation by the freshwater fingernail clam Sphaerium corneum using artificial particles and humic acids
Autor:Guerrero, N.R.V.; Taylor, M.G.; Wider, E.A.; Simkiss, K.
Filiación:Biomarkers Laboratory, Department of Biological Chemistry, Faculty of Exact and Natural Sciences, University of Buenos Aires, 4th Floor, Pab. II, Ciudad Universitaria, 1428 Buenos Aires, Argentina
School of Animal and Microbial Sciences, University of Reading, P.O. Box 228, Whiteknights Reading RG6 6AJ, United Kingdom
Palabras clave:Artificial particles; Bioaccumulation; Pentachlorophenol bioavailability; Sediment-bound chemicals; Sphaerium corneum; Organic chemicals; Sediments; Structure (composition); Bioaccumulation; Environmental impact; fresh water; humic acid; pentachlorophenol; biological uptake; article; benthos; bioaccumulation; bioassay; bioavailability; clam; model; nonhuman; particle size; priority journal; sediment; Sphaerium corneum; suspended particulate matter; Animals; Biological Availability; Bivalvia; Environmental Exposure; Environmental Pollutants; Forecasting; Humic Substances; Models, Biological; Particle Size; Pentachlorophenol; Risk Assessment; Tissue Distribution; Water Pollutants, Chemical; Animalia; Bivalvia; Invertebrata; Sphaerium corneum
Año:2001
Volumen:20
Número:12
Página de inicio:2910
Página de fin:2915
DOI: http://dx.doi.org/10.1002/etc.5620201235
Título revista:Environmental Toxicology and Chemistry
Título revista abreviado:Environ. Toxicol. Chem.
ISSN:07307268
CAS:Environmental Pollutants; Humic Substances; Pentachlorophenol, 87-86-5; Water Pollutants, Chemical
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07307268_v20_n12_p2910_Guerrero

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Citas:

---------- APA ----------
Guerrero, N.R.V., Taylor, M.G., Wider, E.A. & Simkiss, K. (2001) . Modeling pentachlorophenol bioavailability and bioaccumulation by the freshwater fingernail clam Sphaerium corneum using artificial particles and humic acids. Environmental Toxicology and Chemistry, 20(12), 2910-2915.
http://dx.doi.org/10.1002/etc.5620201235
---------- CHICAGO ----------
Guerrero, N.R.V., Taylor, M.G., Wider, E.A., Simkiss, K. "Modeling pentachlorophenol bioavailability and bioaccumulation by the freshwater fingernail clam Sphaerium corneum using artificial particles and humic acids" . Environmental Toxicology and Chemistry 20, no. 12 (2001) : 2910-2915.
http://dx.doi.org/10.1002/etc.5620201235
---------- MLA ----------
Guerrero, N.R.V., Taylor, M.G., Wider, E.A., Simkiss, K. "Modeling pentachlorophenol bioavailability and bioaccumulation by the freshwater fingernail clam Sphaerium corneum using artificial particles and humic acids" . Environmental Toxicology and Chemistry, vol. 20, no. 12, 2001, pp. 2910-2915.
http://dx.doi.org/10.1002/etc.5620201235
---------- VANCOUVER ----------
Guerrero, N.R.V., Taylor, M.G., Wider, E.A., Simkiss, K. Modeling pentachlorophenol bioavailability and bioaccumulation by the freshwater fingernail clam Sphaerium corneum using artificial particles and humic acids. Environ. Toxicol. Chem. 2001;20(12):2910-2915.
http://dx.doi.org/10.1002/etc.5620201235