At 12:00 on February 20 , heavy air pollution in Beijing to start a yellow warning . Beijing Municipal Environmental Protection Bureau , the next three days will continue to heavily polluted state. Advised the public good protection , schools, kindergartens reduce physical education and other outdoor sports . Pictured haze of Chang'an Avenue .
At a news conference on February 11 by the State Council Information Office held , Vice Minister of Environmental Protection翟青宣cloth, in 2014 the ministry will fully promote air pollution , in order to implement the " Air Pollution Prevention Action Plan " (the " atmospheric ten" ) , Ministry of Environmental Protection recently refined with the relevant departments combed the 22 policy measures , and have been submitted to the State Council. Meanwhile, this year the central government will add a special fund set up prevention and control of atmospheric pollution , the first arrangement 5 billion yuan to support five provinces and municipalities including Beijing, Tianjin , Hebei and other air pollution . "Beijing's air pollution control regulations " from March 1 will be implemented, officially opened the haze sniper battle of the big screen .Wholesale masking tape
Saying : Know thyself yourself. To lay the haze sniper war , we must first find out the reasons for the formation of haze . Currently the causes of haze is also a lack of scientific research system , the more popular view is that the formation of haze is mainly concerned with the burning , vehicle exhaust , coal-fired boiler flue gas emissions have become common knowledge. But reporters in a recent interview that the volatile organic solvents to air pollution and haze contribution to be overlooked , but little is known about the people on this issue . Industry experts believe that the organic solvent is a haze governance important and difficult remediation haze is unavoidable emissions of volatile organic solvents and recycling .
Where to organic solvents
"On the formation of haze , is now generally considered to be caused by burning , and therefore industrial coal, vehicle fuel , and straw burning power plant flue gas and other sources to become the focus of public attention , and even street outdoor grill is also considered a cause haze culprit , but in the course of our investigation found that the contribution of volatile organic solvents haze is also not to be underestimated . Moreover, the volatile relationship between organic solvents and haze has not received wide attention of society, So this kind of substances harmful atmospheric environment has more secrecy . " Chen Yu of Beijing People's Congress held in Beijing on January two sessions , submitted a copy called" on the government to promote the special surface coating industry organic waste recycling advice . " Recommendations mentioned in the " organic waste " actually refers to straight into the atmosphere of volatile organic solvents , also called volatile organic compounds (VOC). Proposal was put forth sparked widespread concern on the delegates and the media , and some organic solvents, and the relationship between haze in the offing .Masking tape
"Volatile organic solvent actually volatile solvents at room temperature VOC, benzene, ketones and ethers , such as we often say belong to such substances . These substances once released into the air , will form the oxide organic carbon or aerosols may contribute to the generation of haze . " Chen Yu said.
China Association of Environmental Protection Industry experts also said that despite the volatile organic solvents are not the main causes of the formation of PM2.5 , but its secondary organic aerosol formation accounts for about 20% of the particulate matter , governance more difficult . So PM2.5 volatile organic solvents is also an important contribution to a class of pollution.
A haze of component analysis study also shows that the causes of haze in Beijing , in addition to coal , motor vehicles, industrial fuels and dust outside , formed from volatile organic solvents for PM2.5 haze contribution rate 17%.Washi tape
So, these organic solvents are coming from? Especially in cities like Beijing , most of the chemical industry has been retired , logically speaking there will be plenty of organic solvent emitted directly into the atmosphere.
For this question, Chen Yu said , "surface coating industry is one of the region's air Beijing source of organic solvents , including automotive, furniture, painting and packaging printing three major sectors , although large-scale basic chemical industry has move out from the city, but car repairs, furniture, painting and packaging printing industries supporting industries indispensable urban functions still exist chemical aspects of these industries use large amounts of volatile organic solvents . "Sellotape
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