What are the sources of air pollution?

Question 1: What are the three main sources of air pollution? There are three main types:

(1) Industry: Industry is an important source of air pollution. There are many kinds of pollutants discharged into the atmosphere by industry, including smoke, sulfur oxides, nitrogen oxides, organic compounds, halides, carbon compounds and so on. Some are smoke and some are gas.

(2) Living stoves and heating boilers: A large number of living stoves and heating boilers in cities need to consume a lot of coal, and coal will release a lot of harmful substances such as dust, sulfur dioxide and carbon monoxide to pollute the atmosphere during combustion. Especially when heating in winter, it often makes the polluted area filled with smoke and makes people cough, which is also a pollution source that cannot be ignored.

(3) Transportation: Cars, trains, planes and ships are the main means of transportation at present, and the waste gas produced by burning coal or oil is also an important pollutant. Especially, the number of cars in cities is large and concentrated, and the pollutants discharged can directly hit people's respiratory organs, causing serious air pollution in cities and becoming one of the main air pollution sources in big cities. The exhaust gas emitted by automobiles mainly includes carbon monoxide, sulfur dioxide, nitrogen oxides and hydrocarbons. The first three substances are very harmful.

Question 2: Who is the main source of air pollution? Vehicle exhaust, industrial production, coal burning and dust, how much each of these four accounts for in air pollution in most cities of China, and who occupies the top spot, seems to be difficult to define.

However, yesterday, the Ministry of Environmental Protection completed the analysis of air pollution sources in nine cities across the country, with preliminary results. The results show that motor vehicle exhaust is the primary pollution source in Beijing, Hangzhou, Guangzhou and Shenzhen, coal combustion is the primary pollution source in Shijiazhuang and Nanjing, and dust, mobile sources and industrial production are the primary pollution sources in Tianjin, Shanghai and Ningbo respectively. Which is the chief culprit of air pollution in Xi?

Deputy Director of Sun An Environmental Monitoring Station: PM2.5 is the primary pollutant in winter, and the main source of PM2.5 is coal burning. The primary pollutant in spring and autumn is PM 10, and the main sources of PM 10 are dust, road dust and construction dust. In summer, the primary pollutant is ozone, and the main sources of ozone are automobile exhaust and various volatile gases.

Director Sun said that An will analyze the source of primary pollutants at the end of this year, which can provide concrete support for scientific control of air pollution, just like Beijing-Tianjin-Hebei region. The latest monitoring data shows that in the first quarter of this year, the air quality in Xi City continued to improve.

Sun Xi, deputy stationmaster of environmental monitoring station: 52 days of fine weather appeared in the first quarter of 20 15, 38 days more than that of 20 14.

Compared with 20 13 in the same period, the number of excellent days increased by 47 days. Among the 74 key cities in China, Xi's air quality ranking has dropped out of the bottom ten. Next, Xi will continue to strengthen the prevention and control of dust, motor vehicles, coal burning and burning straw garbage.

Question 3: What is air pollution? The main source of air pollution generally comes from the oxidation of nitrogen oxides, and the pollution source mainly comes from automobile exhaust. Concentrated nitric acid and other substances commonly used in metal casting industries such as gold mining are also sources of pollution that cannot be ignored.

Question 4: How can we really prevent domestic violence? Just divorced.

Dan's.

Men usually fall in love with fighting once.

How many times can the law protect you? It is better to divorce and save your body and mind.

Remember, people who really love you will not use violence against you.

Question 5: What does air pollution include? Air pollutants can be mainly divided into two categories, namely natural pollutants and man-made pollutants. Man-made pollutants often cause public hazards, mainly from fuel combustion and large industrial and mining enterprises.

Particulate matter: refers to liquid and solid substances in the atmosphere, also known as dust.

Sulfur oxide: it is the general term for sulfur oxides, including sulfur dioxide, sulfur trioxide, sulfur trioxide, sulfur monoxide, etc.

Oxides of carbon: mainly including carbon dioxide and carbon monoxide.

Nitrogen oxides: it is the general term for nitrogen oxides, including nitrous oxide, nitric oxide, nitrogen dioxide and nitrogen trioxide.

Hydrocarbons: Compounds formed by carbon and hydrogen, such as methane, ethane and other hydrocarbon gases.

Other harmful substances: such as heavy metals, fluorine-containing gases and chlorine-containing gases.

Question 6: Types and main sources of air pollutants. Air pollutants can be mainly divided into two categories, namely natural pollutants and man-made pollutants. Man-made pollutants often cause public hazards, mainly from fuel combustion and large industrial and mining enterprises. Particulate matter: refers to liquid and solid substances in the atmosphere, also known as dust. Sulfur oxide: it is the general term for sulfur oxides, including sulfur dioxide, sulfur trioxide, sulfur trioxide, sulfur monoxide, etc. Oxides of carbon: mainly including carbon dioxide and carbon monoxide. Nitrogen oxides: it is the general term for nitrogen oxides, including nitrous oxide, nitric oxide, nitrogen dioxide and nitrogen trioxide. Hydrocarbons: Compounds formed by carbon and hydrogen, such as methane, ethane and other hydrocarbon gases. Other harmful substances: such as heavy metals, fluorine-containing gases and chlorine-containing gases.

Question 7: What are the air pollution? What is the main source? China's energy consumption is mainly coal, and air pollutants mainly come from coal burning, among which soot and sulfur dioxide are the main ones. The main problem of atmospheric environment in northern cities of China is dustfall, while in southern cities it is sulfuric acid rain. Due to the emission of nitrogen oxides from automobile exhaust, the main type of acid rain in Europe and America is nitric acid rain.

Question 8: What are the sources of air pollutants?

Pollutants enter the earth's atmosphere in many different ways. Most air pollution is caused by people, including smog from factories, cars, planes or aerosol cans. Secondhand smoke is also considered as a source of air pollution. These anthropogenic sources of pollution are called anthropogenic sources.

Some air pollution, such as naturally occurring pollution, such as volcanic eruption, fire or smoke, is called natural source.

The most common air pollution in big cities mainly comes from the centralized discharge of many different pollution sources. Sometimes, mountains or tall buildings can prevent air pollution from spreading. The appearance of this kind of air pollution will make the air turbid. It's called smoke. The word "smoke" comes from the combination of "smoke" and "fog"

Air pollution in developing countries is more serious than that in developed countries, especially in big cities with many poor people. According to World Health Organization (WHO), Karachi and Pakistan are the most polluted cities in the world. Xinde

In India; Beijing, China; Lima, Peru; And Cairo, Egypt. However, many developed countries also have air pollution problems. Such as Los Angeles, California, nicknamed "Fog City".

Measures to reduce air pollution

Anyone can take measures to reduce air pollution. Thousands of people do this through simple life every day. By taking more public transport instead of driving or cycling, a couple will reduce the number of vehicles.

Driving can reduce carbon dioxide emissions accordingly, thus reducing air pollution. Avoid using spray cans, recycle yard pruning fertilizer, and reduce the possibility of burning. In addition, people can reduce the possibility of smoking. There is still a lot of relevant information on that e fan, so you can go and have a look.