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- Equilibrium_partitioning_sediment_benchmarks abstract "Equilibrium partitioning Sediment Benchmarks (ESBs) are a type of Sediment Quality Guideline (SQG) derived by the USEPA for the protection of benthic organisms. ESBs are based on the bioavailable concentration of contaminants in sediments rather than the dry-weight concentration. It has been demonstrated that sediment concentrations on a dry-weight basis often do not predict biological effects. Interstitial water concentrations, however, predict biological effects much better. This is true because the chemical present in the interstitial water (or pore water) is the uncomplexed/free phase of the chemical that is bioavailable and toxic to benthic organisms. Other phases of the chemical are bound to sediment particles like organic carbon (OC) or acid volatile sulfides (AVS) and are not bioavailable. Thus the interstitial water concentration is important to consider for effects to benthic organisms.Equilibrium partitioning (EqP) predicts the bioavailable concentration of a chemical under given sediment conditions by using partition coefficients. The bioavailable concentration in interstitial water can then be compared to an established water-based effect concentration and used to predict the likelihood of adverse effects. When a chemical exceeds the ESB, an adverse biological effect may occur, and when concentrations are below or equal to an ESB, biological effects are unlikely to occur.The USEPA's Office of Research and Development (ORD) has published ESBs for approximately 65 pollutants or classes of pollutants including 34 PAHs, metal mixtures (e.g., cadmium, chromium, copper, nickel, lead, silver, and zinc), and pesticides dieldrin and endrin".
- Equilibrium_partitioning_sediment_benchmarks wikiPageID "46817874".
- Equilibrium_partitioning_sediment_benchmarks wikiPageLength "12206".
- Equilibrium_partitioning_sediment_benchmarks wikiPageOutDegree "15".
- Equilibrium_partitioning_sediment_benchmarks wikiPageRevisionID "675697073".
- Equilibrium_partitioning_sediment_benchmarks wikiPageWikiLink Aquatic_toxicology.
- Equilibrium_partitioning_sediment_benchmarks wikiPageWikiLink Benthic.
- Equilibrium_partitioning_sediment_benchmarks wikiPageWikiLink Benthic_zone.
- Equilibrium_partitioning_sediment_benchmarks wikiPageWikiLink Category:Aquatic_ecology.
- Equilibrium_partitioning_sediment_benchmarks wikiPageWikiLink Category:Water_pollution.
- Equilibrium_partitioning_sediment_benchmarks wikiPageWikiLink Contaminants.
- Equilibrium_partitioning_sediment_benchmarks wikiPageWikiLink Dieldrin.
- Equilibrium_partitioning_sediment_benchmarks wikiPageWikiLink Effects_range_low_and_effects_range_median.
- Equilibrium_partitioning_sediment_benchmarks wikiPageWikiLink Endrin.
- Equilibrium_partitioning_sediment_benchmarks wikiPageWikiLink Impurity.
- Equilibrium_partitioning_sediment_benchmarks wikiPageWikiLink Interstitial_fluid.
- Equilibrium_partitioning_sediment_benchmarks wikiPageWikiLink Partition_equilibrium.
- Equilibrium_partitioning_sediment_benchmarks wikiPageWikiLink Polycyclic_aromatic_hydrocarbon.
- Equilibrium_partitioning_sediment_benchmarks wikiPageWikiLink Sediment.
- Equilibrium_partitioning_sediment_benchmarks hasPhotoCollection Equilibrium_partitioning_sediment_benchmarks.
- Equilibrium_partitioning_sediment_benchmarks wikiPageUsesTemplate Template:Reflist.
- Equilibrium_partitioning_sediment_benchmarks wikiPageUsesTemplate Template:Technical.
- Equilibrium_partitioning_sediment_benchmarks subject Category:Aquatic_ecology.
- Equilibrium_partitioning_sediment_benchmarks subject Category:Water_pollution.
- Equilibrium_partitioning_sediment_benchmarks hypernym Guideline.
- Equilibrium_partitioning_sediment_benchmarks comment "Equilibrium partitioning Sediment Benchmarks (ESBs) are a type of Sediment Quality Guideline (SQG) derived by the USEPA for the protection of benthic organisms. ESBs are based on the bioavailable concentration of contaminants in sediments rather than the dry-weight concentration. It has been demonstrated that sediment concentrations on a dry-weight basis often do not predict biological effects. Interstitial water concentrations, however, predict biological effects much better.".
- Equilibrium_partitioning_sediment_benchmarks label "Equilibrium partitioning sediment benchmarks".
- Equilibrium_partitioning_sediment_benchmarks wasDerivedFrom Equilibrium_partitioning_sediment_benchmarks?oldid=675697073.
- Equilibrium_partitioning_sediment_benchmarks isPrimaryTopicOf Equilibrium_partitioning_sediment_benchmarks.