Environmental toxicology and chemistry, 2014-12, Vol.33 (12), p.2679-2687
2014
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- Autor(en) / Beteiligte
- Titel
- Extension and validation of the target lipid model for deriving predicted no-effect concentrations for soils and sediments
- Ist Teil von
- Environmental toxicology and chemistry, 2014-12, Vol.33 (12), p.2679-2687
- Ort / Verlag
- Pensacola, FL: Blackwell Publishing Ltd
- Erscheinungsjahr
- 2014
- Quelle
- Wiley Online Library - AutoHoldings Journals
- Beschreibungen/Notizen
- Substance risk assessments require estimation of predicted no‐effect concentrations (PNECs) in soil and sediment. The present study applies the target lipid model (TLM) and equilibrium partitioning (EqP) model to toxicity data to evaluate the extrapolation of the TLM‐derived aquatic PNECs to these compartments. This extrapolation assumes that the sensitivity of aquatic species is similar to that of terrestrial and benthic species. The acute species sensitivity distribution, expressed in terms of species‐specific critical target lipid body burdens, was computed using the TLM‐EqP framework and found to span a similar range as the aquatic organism species sensitivity distribution but with a slightly lower median value (less than 2 times). The species sensitivity distribution for acute‐to‐chronic ratios also exhibited a similar range and distribution across species, suggesting similar mechanisms of action. This hypothesis was further tested by comparing empirical soil/sediment chronic effect levels to the calculated PNEC derived using TLM‐EqP. The results showed that 95% of the compiled chronic effects data fell above the PNEC, confirming an adequate protection level. These findings support the conclusion that TLM‐derived aquatic PNECs can be successfully extrapolated to derive credible PNECs for soil and sediment compartments. Environ Toxicol Chem 2014;33:2679–2687. © 2014 SETAC
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0730-7268eISSN: 1552-8618DOI: 10.1002/etc.2737Titel-ID: cdi_proquest_miscellaneous_1642287580
- Format
- –
- Schlagworte
- Aging, Animal, plant and microbial ecology, Animals, Applied ecology, Aquatic ecology, Aquatic Organisms - chemistry, Aquatic Organisms - drug effects, Aquatic Organisms - metabolism, Biological and medical sciences, Biological Availability, Body Burden, Chronic effects, Compartments, Ecotoxicology, biological effects of pollution, Equilibrium partitioning, Extrapolation, Fundamental and applied biological sciences. Psychology, Geologic Sediments - chemistry, Lipids, Mathematical models, Models, Theoretical, Organic Chemicals - chemistry, Organic Chemicals - metabolism, Organic Chemicals - toxicity, Organisms, Predicted-no-effect concentration, Risk assessment, Sediment, Sediments, Sensitivity, Soil, Soil - chemistry, Soil sciences, Soils, Species, Target lipid model, Terrestrial environment, soil, air, Toxicity