WebTherefore, PNEC values for typical eco-regions in EU surface waters vary, depending on the water chemistry, between 3.6 and 21.8 µg Ni/L. The water chemistry and median HC … WebEnvironmental values Relevant PNECs and other threshold levels End-point Threshold level Organism Environmental com-partment Exposure time PNEC 0.1 mg/l aquatic organisms freshwater short-term (single instance) PNEC 10 µg/l aquatic organisms marine water short-term (single instance)
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WebA 96-h EC50, based on growth, was reported for a marine diatom at 2 mg chromium (III)/l. 96-h LC50s for freshwater fish range from 3.3 mg/l for the guppy (Poecilia reticulata) to … The predicted no-effect concentration (PNEC) is the concentration of a chemical which marks the limit at which below no adverse effects of exposure in an ecosystem are measured. PNEC values are intended to be conservative and predict the concentration at which a chemical will likely have no … See more Assessment factor The use of assessment factors allows for laboratory, single-species and short term toxicity data to be extrapolated to conservatively predict ecosystem effects and accounts for … See more Environmental risk assessment PNEC is used extensively in Europe by the European Chemicals Agency, the Registration, Evaluation, Authorisation and Restriction of Chemicals See more Derivation of PNEC for use in environmental risk lacks some scientific validity because the assessment factors are derived empirically. Additionally, PNECs derived … See more adam stifel capital square
Predicted-No-Effect-Concentration (PNEC) Resource Links - PSCI
WebSodium xylenesulfonate C8H9NaO3S CID 23668192 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological ... WebEnvironmental values Relevant PNECs and other threshold levels Endpoint Threshold level Organism Environmental compartment Exposure time PNEC 0.35 µg/l aquatic organisms freshwater short-term (single instance) PNEC 30 µg/l aquatic organisms sewage treatment plant (STP) short-term (single instance) Web8.1.1 National occupational exposure and biological limit values No additional information available 8.1.2. Recommended monitoring procedures No additional information available 8.1.3. ... DNEL and PNEC Ethanol (64-17-5) DNEL/DMEL (General population) Acute - local effects, inhalation 1900 mg/m³ adam stoll california