Pollution pollutants

Pollution Pollution control Pollutionmomtoring Pollution prevention... 

Air pollution can be considered to have three components sources, transport and transformations in the atmosphere, and receptors. The source emits airborne substances that, when released, are transported through the atmosphere. Some of the substances interact with sunlight or chemical species in the atmosphere and are transformed. Pollutants that are emitted directiy to the atmosphere are called primary pollutants pollutants that are formed in the atmosphere as a result of transformations are called secondary pollutants. The reactants that undergo transformation are referred to as precursors. An example of a secondary pollutant is O, and its precursors are NMHC and nitrogen oxides, NO, a combination of nitric oxide [10102-43-9] NO, and NO2. The receptor is the person, animal, plant, material, or ecosystem affected by the emissions. 

Pollution, n the action of polluting the condition of being polluted. Pollute, vt [L. pollutus, past part, or polluere, to make physically impure or unclean] to defile, desecrate, profane-syn. see CONTAMINATE. Air, n [fr. L aer, fr. Gr. aer] 1. the mixture of invisible tasteless gases which surrounds the earth. Atmosphere, n [fr. Gr. (atmo and sphaira) 2. the whole mass of air surrounding the earth. . . ... 

Indoor pollution Pollution inside a building due to internally generated pollutants as well as external pollutants entering the building. 

Air Pollutancs. (2000). Vancouver Greater Vancouver Regional District. . 

Cross, Frank L. Jr., Baghouse Filtration of Air Pollutants," Pollution Engineering, Feb. 1974, p. 25. 

Fundamentals of environmental engineering. Sources of pollution Pollution problems in water, air. on land and from noi9e and waste energy. Global pollution. Overview of pollution prevention and minimization. 

Several options have been identified that refineries can undertake to reduce pollution pollution prevention options, recycling options, and waste treatment options. Furthermore, pollution prevention options are often presented in four... 

Cheremisinoff, P.N. Focus on high hazard pollutants. Pollut. Engng 1990, 22 (2), 67-79. 

Nonpoint Source Pollution pollution that does not originate from one specific location, such as a sewer pipe, but comes from multiple locations spread over a wide area, for example, runoff from city streets Nonrenewable Resource a resource in fixed supply or one that it is replenished at a rate so slow that it is exhausted before it is replenished, for example, oil Normal Alkane an alkane in which all the carbon atoms in the molecule are attached in a continuous chain... 

Green chemistry is an approach dealing with a fundamental environmental problem of the world, the problem of pollution. Pollution is usually defined as chemical pollution. Most often the approach utilized in the laws has been one of controlling the amount of release of a chemical or controlling the final concentration of that chemical in the medium to which it was released. Green chemistry deals with the above situation somewhat differently preventing the releases. 

Coal is widely used today in power plants around the world, particularly in India and China, which are the most heavily populated countries in the world. The coal-powered plants cause enormous air pollution. Pollutants from a coal-burning Chinese power plant have been found in the mountains of California, proving that the effects of burning coal are felt not only locally but also worldwide. 

Domestic Animals. Although domestic animals can be affected directly by air pollutants, the main concern is chronic poisoning as a result of ingestion of forage that has been contaminated by airborne pollutants. Pollutants important in this connection are... 

US Environmental Protection Agency priority pollutants Pollutants trapped -on charcoal, gas purging at 49°C, then GC-MS [196, 197]... 

Point source Poisons and toxins Polar coordinates Polar ice caps Poliomyelitis Pollen analysis Pollination Pollution Pollution control... 

Cheremisinoff, P. N., "Carbon Adsorption of Air and Water Pollutants," Pollution Engineering, Vol. 8, (July 1976). 

Microbiologically polluted water contains bacteria and other microorganisms that may be hazardous or toxic. Human and animal wastes from sewage and farmyard runoff are the principal sources of microbiological pollution. Polluted water can be an indirect hazard, as fish and shellfish may become contaminated and eaten. 

Criteria Pollutants Pollutants for which a primary (personal safety threshold) or secondary (environmental threshold) limit exists. These limits reflect the efforts of experimental science, with criteria pollutants including common pollutants and those that are harmful based on long-term cumulative exposure, or that typically occur in very low amounts. 

The application of bioassays provides information that may not be obtained by chemical analysis. Biological tests are not intended to replace conventional soil analysis they should rather complement each other in assisting the assessment of soil pollution. Bioassays provide a direct measure of the effects of actual exposure. There is no need to extrapolate from measured chemical concentrations to possible effects. The prediction of bioavailability and combined toxicity from chemical concentrations always results in increased uncertainty. Bioassays consider soil-pollutant and pollutant-pollutant interactions by providing an overall toxicity response. They have the potential to detect (but not identify) the presence of toxic compounds that have not been considered in pollutant priority lists so far (e.g. non-target contaminants in pollutant groups like PAH that are hazardous to ecological receptors). 

---