Definition of Air Pollution - 7529 Words

1. Definition of air pollution Air pollution is the introduction of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms, or cause damage to the natural environment or built environment, into the atmosphere. The atmosphere is a complex dynamic natural gaseous system that is essential to support life on planet Earth. Stratospheric ozone depletion due to air pollution has long been recognized as a threat to human health as well as to the Earths ecosystems. Indoor air pollution and urban air quality are listed as two of the worlds worst pollution problems in the 2008 Blacksmith Institute Worlds Worst Polluted Places report.[1] Define Air pollutants Pollutants Main†¦show more content†¦Within the NMVOCs, the aromatic compounds benzene, toluene and xylene are suspected carcinogens and may lead to leukemia through prolonged exposure. 1,3-butadiene is another dangerous compound which is often associated with industrial uses. * Particulate matter - Particulates, alternatively referred to as particulate matter (PM) or fine particles, are tiny particles of solid or liquid suspended in a gas. In contrast, aerosol refers to particles and the gas together. Sources of particulate matter can be man made or natural. Some particulates occur naturally, originating from volcanoes, dust storms, forest and grassland fires, living vegetation, and sea spray. Human activities, such as the burning of fossil fuels in vehicles, power plants and various industrial processes also generate significant amounts of aerosols. Averaged over the globe, anthropogenic aerosols—those made by human activities—currently account for about 10 percent of t he total amount of aerosols in our atmosphere. Increased levels of fine particles in the air are linked to health hazards such as heart disease,[3] altered lung function and lung cancer. * Persistent free radicals connected to airborne fine particles could cause cardiopulmonary disease.[4][5] * Toxic metals, such as lead, cadmium and copper. * Chlorofluorocarbons (CFCs) - harmful to the ozone layer emitted from products currently banned from use. * Ammonia (NH3) - emitted from agricultural processes. Ammonia is a compoundShow MoreRelatedEssay Types of Pollution942 Words   |  4 Pagesenvironmental pollution. So we wanted to discuss this issue and ask the solutions that we see appropriate. 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