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

materials or byproducts). Pollutants result in environmental pollution or become of public health concern when they reach a concentration high enough to have...

requires an air pollutant concentration over a specified averaging period, obtained from an air monitor or model. Taken together, concentration and time represent...

species, tissue and cell type and genetics.[citation needed] Measures of pollutant concentration Certain safety factor LD50 (median lethal dose) Therapeutic...

usage of the term NOAEL as the highest exposure without adverse effects.' Lowest-observed-adverse-effect level Measures of pollutant concentration Deshpande...

Persistent organic pollutants (POPs) are organic compounds that are resistant to degradation through chemical, biological, and photolytic processes. They...

is the contamination of air due to the presence of substances called pollutants in the atmosphere that are harmful to the health of humans and other living...

wastewaters so that the pollutant concentrations in the treated wastewater comply with the regulations regarding disposal of wastewaters into sewers or...

(NAAQS, pronounced /ˈnæks/ naks) are limits on atmospheric concentration of six pollutants that cause smog, acid rain, and other health hazards. Established...

The Climate and Clean Air Coalition to Reduce Short-Lived Climate Pollutants (CCAC) was launched by the United Nations Environment Programme (UNEP) and...

air. Various factors contribute to high concentrations of pollutants indoors, ranging from influx of pollutants from external sources, off-gassing by furniture...

that govern the pollutant dispersion. The dispersion models are used to estimate the downwind ambient concentration of air pollutants or toxins emitted...

approach measures the exposures to pollutants by monitoring the pollutant concentrations reaching the respondents. The pollutant concentrations are directly...

express the concentration of air pollution in terms of the mass or volume of the pollutant, and they are commonly used for measurements of both gaseous...

prevent and control pollution of groundwater. It mandates the adoption of measures with conductivity and pollutant concentration parameters to achieve good...

hour using both an SO 2 pollutant concentration monitor and a volumetric flow monitor. For NOx, both a NOx pollutant concentration monitor and a diluent...

eliminate or restrict the production and use of persistent organic pollutants (POPs). In 1995, the Governing Council of the United Nations Environment Programme...

federal Clean Water Act. Regulatory guidelines give two acceptable concentrations of pollutants to protect against effects: chronic or acute. Since the MATC...

of both primary and secondary pollutants. The automatic air-quality monitoring network, established in the late 1980s, revealed high concentrations of...

understood to be the concentration of the airborne pollutant in the air at the mouth and nose boundary. Outdoor concentrations are often measured at...

sometimes referred to as bloom dilution, is the decrease in concentration of an element or pollutant with an increase in trophic level. This effect is primarily...

The BOD test measures the oxygen demand of biodegradable pollutants whereas the COD test measures the oxygen demand of oxidizable pollutants. The so-called...

for a given location and time. An algorithm prediction of the pollutant concentrations can be translated into air quality index, same as actual measurements...

"hazardous" and (where relevant) beneficial levels and dosages for drugs, pollutants, foods, and other substances to which humans or other organisms are exposed...

indicator of past biosolids application. The term "pollutant" is defined as part of the EPA 503 rule. The components of sludge have pollutant limits defined...

(modeled on Graham's) dealt with measuring the concentrations and fluxes of salt, diffusing between two reservoirs through tubes of water. It is notable that...

the concentration of pollutants unique to industrial wastewater, and the volume of industrial wastewater lowers the concentration of pollutants unique...

amounts of toxic elements. Contaminated by Pb due to vehicle exhaust, Cd, and Zn caused by tire wear. Contamination by strengthening air pollutants by incineration...

primary pollutant (e.g. it is not deemed to be associated with health effects), it is used as an indication of aesthetic characteristics of drinking...

ability of pollutants to affect the neurophysiology of individuals after the structure of the CNS has become mostly stabilized is an example of negative...