The harm of environmental pollution

People need to breathe air to keep alive. An adult breathes about 20,000 times a day and inhales 1.5 ~ 20 cubic meters of air. Therefore, polluted air has a direct impact on human health. Air pollutants do harm to human body in many ways, such as respiratory system damage, physiological dysfunction, digestive system disorder, nervous system abnormality, mental decline, cancer, disability and so on. People call the smoke of this disaster "the smoke of killing".

2. Damage to plants

Air pollutants, especially sulfur dioxide and fluoride, are very harmful to plants. When the concentration of pollutants is high, it will cause acute damage to plants, damage to the surface of plant leaves, or directly cause leaves to wither and fall off; When the concentration of pollutants is not high, it will cause chronic damage to plants, make the leaves of plants fade green, or have no harmful symptoms on the surface, but the physiological functions of plants have been affected.

3. Acid rain

When the pH value of precipitation is lower than 5.6, precipitation is acid rain. Sulfur dioxide emitted by coal combustion and nitrogen oxides emitted by motor vehicles are the main factors forming acid rain; Secondly, meteorological conditions and topographic conditions are also important factors affecting the formation of acid rain. ?

4. carbon monoxide (CO)

Carbon monoxide is a colorless and odorless gas. It mainly comes from incomplete combustion of carbon-containing fuels and cigarettes, followed by industrial production processes such as coking, steelmaking and ironmaking. Inhaled carbon monoxide is easy to combine with hemoglobin to produce carboxyhemoglobin, which reduces the oxygen carrying capacity of blood flow, leading to weakened consciousness, weakened central nervous system function and weakened cardiopulmonary respiratory function. The victim felt dizzy, headache, nausea, fatigue and even died in a coma.

5. Fluoride

Refers to inorganic fluoride formed and existing in gaseous and granular form. Mainly from the production of fluorine-containing products, phosphate fertilizer plants, steel plants, aluminum smelters and other industrial production processes. Fluoride has a strong stimulating effect on eyes and respiratory organs. When high concentration fluoride gas is inhaled, it can cause pulmonary edema and bronchitis. Long-term inhalation of low-concentration fluoride gas will cause chronic poisoning and skeletal fluorosis, reduce calcium in bones, and lead to sclerosis and osteoporosis.