Human health effects of air pollution

摘要: Abstract Hazardous chemicals escape to the environment by a number of natural and/or anthropogenic activities and may cause adverse effects on human health environment. Increased combustion fossil fuels in last century is responsible for progressive change atmospheric composition. Air pollutants, such as carbon monoxide (CO), sulfur dioxide (SO 2 ), nitrogen oxides (NOx), volatile organic compounds (VOCs), ozone (O 3 heavy metals, respirable particulate matter (PM2.5 PM10), differ their chemical composition, reaction properties, emission, time disintegration ability diffuse long or short distances. pollution has both acute chronic health, affecting different systems organs. It ranges from minor upper respiratory irritation heart disease, lung cancer, infections children bronchitis adults, aggravating pre-existing asthmatic attacks. In addition, short- long-term exposures have also been linked with premature mortality reduced life expectancy. These air pollutants mechanism action are briefly discussed.