Current situation of air pollution
Air pollution in China has become one of the most serious environmental problems. The inhalable particles in many parts of mainland China especially in the north are very commonly seen. Sulfur dioxide pollution is one of the main pollutants as well.
Northwest region is suffering from serious dust pollution. The particulate matters in the north often cause haze in a wide range.
In the south, the emissions of sulfur dioxide and nitrogen oxide are also very large due to acidic soil, and the acid rain covers an area of almost a third of the land.
Current situation of air pollution in China
According to the report of Environmental Analysis of PRC Processing to Environmentally Sustainable Future, among the largest 500 cities in China,
only less than 1% cities meet the recommend of standard of WHO in air quality;
Among the 10 world's most polluted cities, 7 cities are in China. The report was completed by working group composed of experts in environment
at home and abroad and the professional team from Asian Development Bank.
Air is mixture made up of a certain proportion of nitrogen, oxygen, carbon dioxide, water vapor and solid impurity particles. With the development of China's modern industry and transportation, more substances are being emitted into the atmosphere with more complex content, which cause dramatic changes in the atmospheric composition.
Transportation pollution
With the development of China's modern industry and transportation, more substances are being emitted into the atmosphere with more complex content, which cause dramatic changes in the atmospheric composition.
Urban pollution
Among the largest 500 cities in China, only less than 1% cities meet the recommend of standard of WHO in air quality; Among the 10 world's most polluted cities, 7 cities are in China.
Air pollution
Air pollution in China has become one of the most serious environmental problems. The inhalable particles exist in many areas of mainland China. Sulfur dioxide pollution is one of the main pollutants as well. Northwest region is suffering from serious dust pollution.
Main Pollutants
Dust storm
In a sandstorm source and influential area, TSP in atmospheric increases and deteriorate pollution.
Particles
Small particles can be deposited in the lung of human directly through the respiratory tract, cause respiratory diseases, and can be absorbed into the alveoli, enter the blood circulation and cause other organ diseases.
Haze
Haze pollution threatens respiratory system, nerve system, cardiovascular system of human, and will lead to lung cancer especially.
Sulfur dioxide
Sulfur dioxide in the atmosphere will lead to the respiratory tract inflammation, bronchitis, emphysema, eye conjunctival inflammation, etc. It will also lead to weak immunity and disease resistance of teenagers.
