Thursday, December 19, 2019

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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A diverse community of plant and animal life has thrived on this planet for millions of years, sustained by the sun and supported by the soil, water and air. Definition of air pollution Air pollution occurs when the air contains gases, dust, fumes or odour in harmful amounts. That is, amounts which could be harmfulRead MoreThe Effects Of Air Pollution On Human Health Essay1381 Words   |  6 PagesObjectives 1. To establish the definition of air pollution and pollutants and determine their chemical nature. 2. To identify the causes of Air pollution 3. To define air pollution in India with respect to law as stated in the Indian Constitution. 4. To describe the Supreme Court interjection due to Delhi’s pollution and its results. 5. To assess the air pollution level in Delhi and compare the levels before and after Diwali 6. To find the level of pollution caused by different sources and the dataRead MoreNational Resource Council993 Words   |  4 Pagesdeference† in more recent cases. Clean Air Act Amendments of 1977 impose certain requirements on States that have not achieved the national air quality standards established by the Environmental Protection Agency in earlier legislation. The Amendments required the â€Å"nonattainment† states to establish a permit program regulating â€Å"new or modified major stationary sources† of air pollution, pursuant to stringent conditions. The EPA decision to allow states to treat all pollution-emitting devices within the sameRead MoreEffects Of The Vatican And Nazi Germany1375 Words   |  6 Pagesdeaths- as a result of air pollution exposure.† (http://www.who.int/mediacentre/news/releases/2014/air-pollution/en/) The definition of air pollution is the air contains gases, dust, fumes or odor in harmful amounts. That is, amounts which could be harmful to the health or comfort of humans and animals or which could cause damage to plants and materials. Primary air pollutant includes carbon monoxide from car exhausts and sulfur dioxide from the combustion of coal. Further pollution can arise if pollutants

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