Coordinated Control of Fine-Particle and Ozone Pollution by the Substantial Reduction of Nitrogen Oxides
1.Introduction
In recent years,the air quality in China has improved signifi-cantly.In many cities,however,the concentration of fine particu-late matter(PM2.5)remains higher than the secondary-level national ambient air quality standard(NAAQS level-2,35 μg·m-3,GB3095-2012[1])and much higher than the first-level NAAQS(15 μg·m-3,GB3095-2012[1])and the World Health Organization(WHO)air quality guidelines(5 μg·m-3).In addition,heavy haze pollution still occurs,especially in wintertime.The concentration of ozone(O3)has increased in many regions of China.Indeed,O3 has become the major air pollutant after PM2.5,especially in summertime.Thus,the coordinated control of PM2.5 and O3,as part of the 14th Five-Year Plan for Economy and Social Development of the People's Republic of China,remains a considerable challenge.
nitrogen、control、coordinated、fine-particle、oxides、ozone、pollution、reduction、substantial
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S;Q945.78;S511.03
2022-10-31(万方平台首次上网日期,不代表论文的发表时间)
共4页
13-16