Modeling pentachlorophenol bioavailability and bioaccumulation by the freshwater fingernail clam Sphaerium corneum using artificial particles and humic acids
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 o...
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todo:paper_07307268_v20_n12_p2910_Guerrero2023-10-03T15:37:20Z Modeling pentachlorophenol bioavailability and bioaccumulation by the freshwater fingernail clam Sphaerium corneum using artificial particles and humic acids Guerrero, N.R.V. Taylor, M.G. Wider, E.A. Simkiss, K. 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 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_07307268_v20_n12_p2910_Guerrero |
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Universidad de Buenos Aires |
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I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 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 |
| topic_facet |
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 |
| description |
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. |
| format |
JOUR |
| author |
Guerrero, N.R.V. Taylor, M.G. Wider, E.A. Simkiss, K. |
| author_facet |
Guerrero, N.R.V. Taylor, M.G. Wider, E.A. Simkiss, K. |
| author_sort |
Guerrero, N.R.V. |
| title |
Modeling pentachlorophenol bioavailability and bioaccumulation by the freshwater fingernail clam Sphaerium corneum using artificial particles and humic acids |
| title_short |
Modeling pentachlorophenol bioavailability and bioaccumulation by the freshwater fingernail clam Sphaerium corneum using artificial particles and humic acids |
| title_full |
Modeling pentachlorophenol bioavailability and bioaccumulation by the freshwater fingernail clam Sphaerium corneum using artificial particles and humic acids |
| title_fullStr |
Modeling pentachlorophenol bioavailability and bioaccumulation by the freshwater fingernail clam Sphaerium corneum using artificial particles and humic acids |
| title_full_unstemmed |
Modeling pentachlorophenol bioavailability and bioaccumulation by the freshwater fingernail clam Sphaerium corneum using artificial particles and humic acids |
| title_sort |
modeling pentachlorophenol bioavailability and bioaccumulation by the freshwater fingernail clam sphaerium corneum using artificial particles and humic acids |
| url |
http://hdl.handle.net/20.500.12110/paper_07307268_v20_n12_p2910_Guerrero |
| work_keys_str_mv |
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