Assessments (CSA) and referenced in Chemical Safety Reports (CSR). PECs may be compared with Measured Environmental Concentrations (MEC) if available. v t e...

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...

should be compared with the respective Predicted Environmental Concentration (PEC) and Predicted No-Effect Concentration (PNEC) in order to decide whether...

Concentration (PNEC) was found to be 0.23 mg a.i./L. The Predicted Environmental Concentration (PEC)/PNEC ratio has been determined to be < 1 and, therefore...

is based on the ratio between predicted environmental concentration of the substance (PEC) and the highest concentration of the substance that does not...

exposure to a no-effect level, such as the Predicted Environmental Concentration/Predicted No-Effect Concentration (PEC/PNEC) ratio in Europe. Although this...

Revzan, K.; Apte, M.; Gelman, A.; Boscardin, W. John. "Predicted County Median Concentration". Lawrence Berkeley National Laboratory. Archived from the...

Environmental effects of mining can occur at local, regional, and global scales through direct and indirect mining practices. Mining can cause erosion...

combine topographic, emissions, and meteorological data to predict air pollutant concentrations are often helpful in interpreting air monitoring data. Additionally...

concentration over time. Chemical kinetics is the part of physical chemistry that concerns how rates of chemical reactions are measured and predicted...

Environmental science is an interdisciplinary academic field that integrates physics, biology, meteorology, mathematics and geography (including ecology...

and defined as “the concentration (threshold) at which Chronic effects are first observed”. The predicted no effects concentration (PNEC) is calculated...

chronic poisoning, even if environmental levels of the toxin are not very high. Bioaccumulation, for example in fish, can be predicted by models. Hypothesis...

forms of nitrogen are in excess. The Environmental Protection Agency has set a maximum of 10 mg/L nitrate concentration in drinking and surface waters. When...

Measures of pollutant concentration are used to determine risk assessment in public health. Industry is continually synthesizing new chemicals, the regulation...

which are released during mining. High concentration of these elements in brine is a technological and environmental concern. Carbon dioxide emissions and...

Environmental, social, and governance (ESG), is a set of aspects, including environmental issues, social issues and corporate governance that can be considered...

the fate of a chemical in a system is modeled giving predicted endpoint phases and concentrations. It needs to be considered that reaching steady state...

chemical concentrations of a toxic substance in sediment. The ERL indicates the concentration below which toxic effects are scarcely observed or predicted: the...

This elaborate concentration series allows researchers to describe how the mixture components interact with each other and predict effects at untested...

48 ppm. This continuous increase in CO2 concentrations is a clear indicator of ongoing global environmental stress, primarily driven by the burning of...

evaluate particle type, size, concentration, distribution, and morphology. The use of Model Based Condition Monitoring for predictive maintenance programs is...

change that are normally adapted to environmental cues in later life. This can be a benefit only when the predicted and actual postnatal environment match...

weighted average of hourly air monitoring data used by the United States Environmental Protection Agency (USEPA) for real-time reporting of the Air Quality...

because lower concentrations of pollutants in environmental matrices such as seawater or sediments, can very quickly grow to harmful concentrations in organisms...

Blood alcohol content (BAC), also called blood alcohol concentration or blood alcohol level, is a measurement of alcohol intoxication used for legal or...

The environmental effects of transport are significant because transport is a major user of energy, and burns most of the world's petroleum. This creates...

this is HCFC-142b which had a higher concentration than the emission rates suggest it should. The concentration of HCFC-142b in the atmosphere grew to...

of the nanoFate model, which can be used to assess the predicted environmental concentrations of ENMs in different regions, under a variety of conditions...

leading to high concentrations of pollutants, chemical reactions between air contaminants and hazy conditions. On a day when the AQI is predicted to be elevated...