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Download Air Quality (Environmental Issues) by Yael Calhoun PDF

By Yael Calhoun

Ever because the commercial Revolution, air caliber has been slowly constructing into probably the most urgent concerns dealing with either the U.S. and the realm. As toxins fromn undefined, vehicles, and chemical substances has elevated, evnironmental advocates became extra vocal of their calls for for laws.

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5 24-hour national standard. 5 24-hour levels is 65 µg/m3. However, EPA set the Air Quality Index for particles to acknowledge that levels below 65 µg/m3 are harmful to public health. To evaluate the year-round levels of particle pollution for any monitored county, the American Lung Association State of the Air: 2004 uses the decision of EPA in its determination whether the county met or failed to meet the national air quality standards. . The grades in this report are assigned based on the quality of the air in areas, and do not reflect an assessment of efforts to implement controls that improve air quality.

The Effects of Air Pollution on Health from the American Heart Association Exposure to air pollution contributes to the development of cardiovascular diseases (heart disease and stroke). A person’s relative risk due to air pollution is small compared with the impact of established cardiovascular risk factors such as smoking, obesity, or high blood pressure. However, this is a serious public health problem because an enormous number of people are exposed over an entire lifetime. BACKGROUND Until May of 2004, the American Heart Association had not issued any expert reviewed statement about the short-term and long-term effects of chronic exposure to different pollutants.

SOx gases are formed when fuel containing sulfur, such as coal and oil, is burned, and when gasoline is extracted from oil, or metals are extracted from ore. SO2 dissolves in water vapor to form acid, and interacts with other gases and particles in the air to form sulfates and other products that can be harmful to people and their environment. Over 65% of SO2 released to the air, or more than 13 million tons per year, comes from electric utilities, especially those that burn coal. Other sources of SO2 are industrial facilities that derive their products from raw materials like metallic ore, coal, and crude oil, or that burn coal or oil to produce process heat.

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