Air POLLUTION By Dr Ayman Elkhateeb Lecturer of

Air POLLUTION By Dr/ Ayman Elkhateeb Lecturer of community medicine and occupational diseases, community medicine department, Faculty of Medicine, Minia University.

Environment Physical, chemical, and biologic factors that surround an organism and shape its survival. Pollution is the introduction (by people) of contaminants (substances or energy ) into a natural environment that causes instability, hazard to health, harm to living resources and ecological systems, damage to structures, or interference with legitimate uses of the environment.

Air pollution Alteration of percentages of normal air constituents or/and contamination of the air by: - noxious gases - minute particles of solid and liquid matter (particulates) in concentrations that endanger health. Imbalance in the air quality

Source of air pollution 1. Natural sources Volcanic eruptions. Forest fires. Pollen grains of flowers. 2. Man-made sources Combustion sources. Industrial activity. Community activity. Personal habits. Wars. Deforestation.

Combustion sources A – Power plant and domestic heating equipments (SO 2, NO 2 and CO) B - Motor vehicles: - photochemical oxidant substance & Ozone. (how) - pollution (CO, NO, lead and hydrocarbons. )

Industrial activity Restricted to aria of activity and depend on: - Location. - Topography. - Whether condition. - stock high. - Row material. - Equipments.

Types of air pollution according to site: - Outdoor air pollution. - Indoor air pollution. according to nature: - Chemical air pollution. - Biological air pollution - Physical air pollution.

Indoor air pollution

Effects of air pollution 1 - Effects on human health. 2 – Effects on environment. A - Global worming. B – Acid rain C – Ozone layer depletion. D - Smog

Control Measures – Removal of pollutants – Reduce sulphur content before burning – Use of energy sources other than fossil fuels – Legal measures from authorities – Increased planting of vegetation