防霾减少雾霾危害（Prevent haze, reduce haze hazards）.doc

防霾减少雾霾危害（Prevent haze, reduce haze hazards） Haze harm breathing and heart Fog and haze is a combination of fog and haze. Fog and haze are two kinds of weather phenomena in nature. Fog is generally milky white, mainly composed of water vapor, and in general will be able to float past; haze is orange or gray, can not see through the dust in the air, sulfuric acid, nitric acid and other particles. They combine to make the sky gray in a flash. Human factors are the main cause of haze. First of all, automobile exhaust, the use of diesel vehicles is the emission of fine particles of recidivism.. The use of small gasoline vehicles, although the emissions of gaseous pollutants, such as nitrogen oxides and so on, but hit fog days, it is easy to change into two particulate pollutants, aggravating haze. North to the winter, early spring, burning coal heating generated by the exhaust gas, industrial production emissions, as well as construction sites and road traffic dust is caused by fog and haze factors. Frequent haze occurs, as well as meteorological factors, when the atmospheric air pressure is low, the air is not flowing, the tiny particles in the air gathered, floating in the air, haze generated. Haze is known as the killer of human health, its harm has long been too numerous to mention. Tremble!! Man, every breath you breathe, were here. This is a description of PM2.5 under the Jing Chai documentary dome below. Fine particles in fog and haze can affect the respiratory system, increase airway inflammation, and attack the immune system. Will further affect the cardiovascular system, serious myocardial ischemia and injury, arrhythmia, and lead to myocardial infarction. Data from the Chinese Academy of Sciences show that when the PM2.5 value rises, the death rate of the population rises, and in China, 500 thousand people die prematurely because of air pollution. Peng Yingdeng said: we can see and hold the haze, its composition is very complex, there are hundreds of particles