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Air pollution Paper

Words: 727, Paragraphs: 9, Pages: 3

Paper type: Essay, Subject: Pollution

Parent topic:

Air pollution is the introduction of chemicals, particulates, biological materials, or other harmful materials into the Earth’s atmosphere, possibly causing disease, death to humans, damage to other living organisms such as food crops, or the natural or built environment. The atmosphere is a complex 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 Earth’s ecosystems.

Indoor air pollution (see Airlock) and urban air quality are listed as two of the world’s ores toxic pollution problems in the 2008 Blacksmith Institute World’s Worst Polluted Places report. [l] Pollutants[edit] Main articles: Pollutant and Greenhouse gas Before flue-gas desertification was installed, the emissions from this power plant in New Mexico contained excessive amounts of Suffer dioxide. Schematic drawing, causes and effects of air pollution: (1) greenhouse effect, (2) particulate contamination, (3) increased IV radiation, (4) acid rain, (5) increased ground level ozone concentration, (6) increased levels of nitrogen oxides.

An air pollutant is a substance in the air that can have adverse effects n humans and the ecosystem. The substance can be solid particles, liquid droplets, or gases. A pollutant can be of natural origin or man-made. Pollutants are classified as primary or secondary. Primary pollutants are usually produced from a process, such as ash from a volcanic eruption. Other examples include carbon monoxide gas from motor vehicle exhaust, or the sulfur dioxide released from factories. Secondary pollutants are not emitted directly.

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Rather, they form in the air when primary pollutants react or interact. Ground level ozone is a prominent example of a secondary pollutant. Some Laotians may be both primary and secondary: they are both emitted directly and formed from other primary pollutants. Major primary pollutants produced by human activity include: Sulfur oxides (SOX) – particularly sulfur dioxide, a chemical compound with the formula SIS. SIS is produced by volcanoes and in various industrial processes. Coal and petroleum often contain sulfur compounds, and their combustion generates sulfur dioxide.

Further oxidation of SIS, usually in the presence of a catalyst such as NON, forms HOSTS, and thus acid rain. [2] This is one of the causes for concern over he environmental impact of the use of these fuels as power sources. Nitrogen oxides (Knox) – Nitrogen oxides, particularly nitrogen dioxide, are expelled from high temperature combustion, and are also produced during thunderstorms by electric discharge. They can be seen as a brown haze dome above or a plume downwind of cities. Nitrogen dioxide is a chemical compound with the formula NON.

It is one of several nitrogen oxides. One of the most prominent air pollutants, this reddish-brown toxic gas has a characteristic sharp, biting odor. Carbon monoxide (CO)- CO is a colorless, odorless, toxic yet non-irritating gas. It is a product by incomplete combustion of fuel such as natural gas, coal or wood. Vehicular exhaust is a major source of carbon monoxide. Volatile organic compounds – Voss are a well known outdoor air pollutant. They are categorized as either methane (CHI) or non-methane (Moves).

Methane is an extremely efficient greenhouse gas which contributes to enhanced global warming. Other hydrocarbon Voss are also significant greenhouse gases because of their role in creating ozone and prolonging the life of methane in the atmosphere. This effect varies depending on local air quality. The aromatic Moves benzene, Lune and Selene are suspected carcinogens and may lead to leukemia with prolonged exposure. 1 , 3-butadiene is another dangerous compound often associated with industrial use.

Particulates, alternatively referred to as particulate matter (PM), atmospheric particulate matter, or fine particles, are tiny particles of solid Or liquid suspended in a gas. In contrast, aerosol refers to combined particles and gas. 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, rower plants and various industrial processes also generate significant amounts of aerosols.

Averaged worldwide, anthropogenic aerosols?those made by human activities?currently account for approximately 10 percent of our atmosphere. Increased levels of fine particles in the air are linked to health hazards such as heart altered lung function and lung cancer. Persistent free radicals connected to airborne fine particles are linked to cardiopulmonary Toxic metals, such as lead and mercury, especially their compound ends.

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