الفهرس 
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Abstract
Air pollution from power plants use Fossil-Fuel-fired is one of the
principal sources which responsible for emission of air pollutants where it causing some of most pressing environmental problems today. Emissions of sulphur and nitrogen compounds from power stations represent a significant fraction of the total emissions of these elements to the atmosphere. Understanding their subsequent chemical reactions in the
atmosphere is of fundamental importance as without it, a quantitative assessment of their contribution to local and regional scale air pollution is not possible. Power plants are significant emitters of precursor gases of fine particulate matters. It is widely used recognized that air pollution from power plants adversely affects public health. With the turn of the st century, fossil fuels are still the predominant source of energy in most economic sectors worldwide, particularly in the electric power sector. Fossil fuels are generally composed of aliphatic hydrocarbons with impurities such as sulfur, water and other chemicals. The combustion of these chemicals results in the formation of effluents such as sulfur dioxide and oxides of nitrogen as well as carbon dioxide and other effluents. The rapid economic growth in developed as well as in developing countries has led to increases in energy consumption patterns and hence in stacks emissions that are causing air quality degradation. Encountering these emissions necessitates the need to mplement strategies and plans to mitigate the impacts of energy conversion processes in general and power plants in particular on air
quality and global environment.
The present work is designed to be
St study to determine hazardous
air pollutants (HAPs) concentration emitted from power plants stacks uses different types of fossil- fuels. Assessment of gases and particulate matter concentrations and determine their chemical contents. Also estimate the risks due exposure of HAPs. Using some computer program software’s to
assess the impact of such pollutants on the surrounding.