GGR100H1 Chapter Notes -Infant Mortality, Diesel Fuel, Particulates
Document Summary
Air pollutants are composed of either visible particles ash, smoke or dust or invisible particles fumes, mists and odors. Primary air pollutants are generated when fossil fuels are used 3 primary fossil fuels coal, natural and petroleum used for energy and transportation. These fossil fuels are carbon based, release carbon monoxide and carbon dioxide when combusted, coal also contains sulfur and nitrogen oxides. Most common pollutants are called criteria pollutants b/c epa uses them as basis for setting permissible levels. One set of limits, called primary standard to protect health, another set of limits called, secondary standard to prevent environmental and property damage. Criteria pollutants are most regulated air pollutants focused on limiting their usage and discharge, not eliminate the cause. Difficulty arises from variety of sources generation of energy, use and combustion of fossil fuels in transportation and agriculture, motor vehicle exhaust due to increase in # of vehicles on road.
