1. Hazards to human health
People need to breathe air to sustain life. An adult breathes about 20,000 times a day, inhaling 15 to 20 cubic meters of air. Therefore, polluted air has a direct impact on human health. The harm of air pollutants on the human body is multi-faceted, manifested as respiratory system damage, physiological dysfunction, digestive system disorders, nervous system abnormalities, intellectual decline, carcinogenic, disabling. People call this catastrophic smog "killer smog".
2, the harm to plants
Atmospheric pollutants, especially sulfur dioxide, fluoride and other harm to plants is very serious. When the concentration of pollutants is very high, it will produce acute harm to plants, so that the plant leaf surface injury spot, or directly make the leaf wither and fall off; when the concentration of pollutants is not high, it will produce chronic harm to plants, so that the plant leaves fade green, or on the surface of the surface can not be seen what harm to the symptom, but the plant's physiological functions have been affected.
3, acid rain
refers to precipitation when the pH value of precipitation is lower than 5.6, precipitation is acid rain. Sulfur dioxide emitted from coal combustion and nitrogen oxides emitted from motor vehicles are the main factors in the formation of acid rain; secondly, meteorological conditions and topographical conditions are also important factors affecting the formation of acid rain.?
4, carbon monoxide (CO)
Carbon monoxide is a colorless, odorless gas. Mainly from the incomplete combustion of carbon-containing fuels, cigarettes, followed by coking, steelmaking, iron and other industrial production processes produced. Human inhalation of carbon monoxide is easy to combine with hemoglobin to generate carboxyhemoglobin, and reduce the oxygen-carrying capacity of the bloodstream, resulting in weakened consciousness, central nervous system function, the heart and lungs respiratory function; the victim felt dizziness, headache, nausea, fatigue, and even coma and death.
5, fluoride (F)
This refers to the inorganic fluoride that exists in gaseous and particulate form. Mainly from the production of fluorine-containing products, phosphate fertilizer plants, iron and steel mills, aluminum smelting plants and other industrial production processes. Fluoride on the eyes and respiratory organs have a strong stimulus, inhalation of high concentrations of fluoride gas, can cause pulmonary edema and bronchitis. Long-term inhalation of low concentrations of fluoride gas can cause chronic poisoning and fluorosis, so that the calcium in the bones is reduced, leading to osteosclerosis and osteoporosis.