Environmental Protection Topic

Xinhua Beijing February 3 Chinese Academy of atmospheric haze chase due to control special study group monitoring results released January, Beijing, Tianjin and a total of five times stronger haze pollution process. Motor vehicles, heating and catering emissions over 50% of the "contribution" strong haze pollution in Beijing.

"On the Beijing motor vehicle for the city the largest source of PM2.5, about a quarter, followed by coal and foreign conveying fifth each hydrocarbon volatile and local cooking emissions in recent years, there is a rapid The upward trend should intensify control, industrial and ground dust should be further improved. "Yuesi, researcher at the Institute of Atmospheric Physics, Chinese Academy of Sciences said.

He said that the Beijing-Tianjin-Hebei region should focus on control of industrial and coal-fired process, with emphasis on the combustion process of desulfurization, denitration and dust; while highly concerned about the emissions from diesel vehicles and oil quality.

Chinese Academy of Sciences in Beijing, Tianjin and 15 PM2.5 monitoring stations in Beijing, Tianjin and January 5 strong haze pollution occurred in January 6 to 8, 9 to 15, 17 to 19 22 to 23, 25 to 31, 2009. Fifth pollution process PM2.5 greater than 300 micrograms / cubic meter for more than 50 hours.

Experts pollutant component analysis, the the strong haze swept across the country in the eastern part of the chemical composition of pollutants, smog event in London in 1952 and Los Angeles in the 1940s to 1950s photochemical smog pollutants mix and superimposed characteristics of dust aerosol in China, is a direct consequence of the destruction of the human extensive emissions and natural ecosystems.

Chinese Academy of Sciences in September 2012 to start chasing due and control of atmospheric haze special study. Special chief scientist HE Hong, the special program with five years in the Bohai Rim, the Yangtze River Delta, Pearl River Delta as the study area, to clarify the formation mechanism of the regional haze developed the induced haze key pollutants control technologies for the control of gray haze pollution to provide scientific and feasible technical and policy solutions.