Uptake and depuration of nonionic organic contaminants from sediment by the oligochaete,Lumbriculus variegatus
| العنوان: | Uptake and depuration of nonionic organic contaminants from sediment by the oligochaete,Lumbriculus variegatus |
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| المؤلفون: | Jim D. Petty, Ning Wang, Gerald T. Ankley, James N. Huckins, David R. Mount, Peter F. Landrum, F. James Dwyer, Eric L. Brunson, Christopher G. Ingersoll |
| المصدر: | Environmental Toxicology and Chemistry. 22:872-885 |
| بيانات النشر: | Wiley, 2003. |
| سنة النشر: | 2003 |
| مصطلحات موضوعية: | Pollutant, Lumbriculus variegatus, biology, Health, Toxicology and Mutagenesis, Lumbriculidae, Sediment, biology.organism_classification, chemistry.chemical_compound, Dichlorodiphenyldichloroethylene, chemistry, Environmental chemistry, Bioaccumulation, Environmental Chemistry, Dichlorodiphenyldichloroethane, Water pollution |
| الوصف: | Uptake of sediment-associated contaminants by the oligochaete Lumbriculus variegatus was evaluated after 1, 3, 7, 14, 28, and 56 d of exposure to a field-collected sediment contaminated with DDT and its metabolites, dichlorodiphenyldichloroethane (DDD) and dichlorodiphenyldichloroethylene (DDE), or to a field-collected sediment contaminated with polycyclic aromatic hydrocarbons (PAHs). Depuration of contaminants by oligochaetes in a control sediment or in water was also evaluated over a 7-d period after 28 d of exposure to the field-collected sediments. Accumulation of PAHs with a log octanol-water partitioning coefficient (log Kow) 5.6 or DDD and DDE typically exhibited a steady increase from day 1 to about day 14 or 28, followed by a plateau. Therefore, exposures conducted for a minimum of 14 to 28 d better reflected steady-state concentrations for DDT and its metabolites and for PAHs. Depuration rates for DDT and its metabolites and high-Kow PAHs were much higher in organisms held in clean sediment relative to both water-only depuration and model predictions. This suggests that depuration in clean sediment may artificially accelerate depuration of hydrophobic compounds. Comparisons between laboratory-exposed L. variegatus and oligochaetes collected in the field from these sediments indicate that results of laboratory tests can be extrapolated to the field with a reasonable degree of certainty. |
| تدمد: | 1552-8618 0730-7268 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::bd0f1bdf39340af8a26eee06e7c90831 https://doi.org/10.1002/etc.5620220427 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........bd0f1bdf39340af8a26eee06e7c90831 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15528618 07307268 |
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