Also known as primary pollutants. "Directly or indirectly, from the sources of pollutants discharged into the environment. Such as clean air and water into the body of chemical toxins, viruses. Is the major source of pollution.
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No. 2
Primary pollutant 】 【Primary pollutant Directly into the environment from pollution sources, and its physical and chemical properties of the pollutants did not change. Also known as primary pollutants. Department relative to the secondary pollutants, the latter transformed from the former. Some pollutants may be caused by either a direct discharge of pollutant sources, it could be transformed into the environment from the secondary pollutants. If the air so3 and no2, may be fired or a car exhaust emissions of pollutants, also may be caused by emissions so2 and no in the air generated by the oxidation of secondary pollutants. There is a common pollutant in the atmosphere so2, freon, terpenes, ash, water and soil heavy metals, organic compounds and so on. By the time the environmental pollution caused by pollutants, known as a pollution. Primary pollutant emitted directly from sources of air pollutants such as particulate matter, sulfur dioxide, carbon monoxide, nitrogen oxides, hydrocarbons, etc.
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Dictionary to explain
A pollutant known as the "primary pollutants." Directly or indirectly by the sources of pollutants discharged into the environment. Such as clean air and water into the body of chemical toxins, viruses and so on. Is a major source of environmental pollution.
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A toxic pollutants and their sources
Component of photochemical smog pollution and by the time the formation of secondary pollution, a pollution also affects human health. Described below and harm the common invisible killer: With the gaseous pollutants sulfur dioxide, suspended particulate matter synergistic effects of reduced sunlight exposure and visibility, the air cloudy, foggy, cloudy. The main source of coal and construction. Enter the body with breathing airborne dust particulates, have half the lung can be attached to the wall, or add to constitute an important cause of human respiratory diseases. The main source of coal and construction. Sulfur dioxide on the human conjunctiva and upper respiratory tract with a strong stimulation. Long-term exposure to low concentrations of sulfur dioxide, there will be burnout, fatigue, rhinitis, pharyngitis, bronchitis, taste disturbance, rehabilitation and other symptoms of a cold is not easy; sulfur dioxide in the formation of acid mist or rain will corrode metal, equipment, _set_tling to the ground will destroy the soil and water quality . The main source of coal industry. As carbon monoxide and oxygen affinity of hemoglobin 300 times, the formation of nitrogen oxide hemoglobin, reduced hemoglobin, oxygen delivery to human tissues the ability to damage the nerve center of the maximum. The main source of coal, automobile exhaust. Hydrocarbons hydrocarbons include a variety of hydrocarbon compounds, into the human body causes the body to produce chronic poisoning, some compounds may directly stimulate the eyes, nasal mucosa, it weakened, more importantly, hydrocarbons and nitrogen oxides in the sunlight, will produce photochemical reaction to produce serious human and biological hazards of photochemical smog. The main sources of vehicle exhaust and industrial. NOx nitrogen oxides and nitric oxide in the affinity of hemoglobin in the blood is stronger than carbon monoxide. Through the respiratory tract and lungs into the blood, loss of oxygen capacity, carbon monoxide produced the same serious consequences. Deep in the lungs of nitrogen oxides invasive pulmonary capillaries. Cause pulmonary edema. The main source of coal, automobile exhaust. In addition to the concentration of soot, the particle diameter and chemical properties play a decisive role, 5 micron particles can enter the respiratory tract, causing lung disease. The main source of diesel exhaust.
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Wikipedia Daquan
yi ci wuranwu Primary pollutant primary pollutant Directly into the environment from pollution sources, and its physical and chemical properties of contaminants is no change, or primary pollutants. Relative to the primary pollutants in terms of secondary pollutants. Secondary pollutant formed by the transformation of primary pollutants. Some pollutants may be either a direct discharge of pollutants from the pollution sources, but also in the environment may be transformed from the secondary pollutants, such as sulfur trioxide in the atmosphere, emitted directly from pollution sources may be a pollutant, but also may be secondary oxidation of sulfur dioxide pollutants. Environmental pollution is mainly caused by a pollutant, the source of clear, can take measures to control. (Wang Anpu)