Final - The Pollution Of The Air

Final - The Pollution Of The Air - 1 The Pollution Of The...

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1 The Pollution Of The Air Desiree’ Forgason SCI/275 September 5, 2010 David Barraza
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3 Atmospheric Pollution Air pollution is substances in the air that causes damage to both the environment and humans. Pollutants can be in the form of particles (solid), droplets (liquid) or gases. Pollutants may also be natural or fabricated. Two classification types for pollutants they are primary and secondary. Primary pollutants are air pollutants emitted directly from a source. Secondary pollutants not emitted but forms when primary pollutants react in the atmosphere. Several types of primary pollutants such are carbon monoxide, sulfur oxides, nitrogen oxides, volatile organic compounds (VOCs), and particle matter. Carbon monoxide is a poisonous, colorless, odorless tasteless gas that can cause unexpected illness, and sometimes death. Carbon monoxide results from incomplete burning of materials containing carbon (gasoline, wood, coal, and oil). Breathing carbon monoxide is dangerous it dislocates the oxygen in the blood in which it denies vital organs of oxygen. Each year thousands of people and animals die from carbon monoxide poisoning because they do not have a carbon monoxide detector in their home; thousands of people visit the emergency room and hospitalized because of no detector in the home. Fatality is higher amongst the elderly. Sulfur oxides consist of two types’ sulfur dioxide and sulfur trioxide. The air pollutant of concern is sulfur dioxide. Sulfur oxides are an irritant colorless gas with a bitter taste. It dissolves in water and forms sulfurous acid. Sulfur dioxide affects the upper respiratory system, eyes, and skin. Exposure can be determined because the pollutant is changed into a breakdown product once and then checked in the urine and blood stream. Nitrogen Oxides different forms are nitric oxide (colorless gas), nitrogen dioxide (reddish brown or dark orange gas), nitrogen trioxide (colorless gas), nitrogen tetroxide (colorless gas), nitrogen pentoxide (colorless gas) and nitrous oxide (colorless gas). The most common forms in
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4 the air are nitrogen dioxide and nitric oxide. Exposure of these oxides can lead to coughing, chest pains, and irregular heartbeat. Even though these symptoms may subside week’s later people may go through a second stage of symptoms. Particle matter comes from many sources. The most common that generally used every day would be automobile emissions. The size of the matter determines the effect the particle will have on the respiratory system. Small particles cause cancer, silicosis, and pneumoconiosis. Due to exposure to heavy metals the composition of the particles are also important. Volatile Organic Compounds (VOCs) are organic compounds that become vapors or gases. When combined with nitrogen oxides VOCs react to form ground-level smog. The effect that
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Final - The Pollution Of The Air - 1 The Pollution Of The...

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