摘要
2008～2011年夏季京津冀区域大气背景兴隆站大气污染观测结果表明,4 a夏季NOx的平均浓度分别为(9.1±5.1)、(5.9±2.6)、(12.2±4.6)、(14.1±5.0)μg·m-3,O3日小时最大浓度平均分别为(163.3±42.7)、(175.2±48.8)、(199.6±52.6)、(207.2±62.1)μg·m-3,PM2.5的平均浓度分别为(59.8±44.6)、(44.4±28.0)、(58.1±34.2)、(52.5±36.7)μg·m-3;其中,2010年污染物上升的幅度最大,NOx、O3、PM2.5平均浓度比2009年分别上升了106%、14%、31%.2010年京津冀地区机动车保有量的激增以及工业的快速发展,使得京津冀地区背景大气污染物浓度显著上升.区域大气氧化性同样显著升高,2010年Ox比2009年上升了20%,达到(155.3±40.2)μg·m-3,区域高浓度臭氧与高浓度细粒子大气复合污染正在进一步加剧.
In order to understand the change of background concentration of air pollutants with the development of economy in the region of North China,the concentrations of NOx,O3 and PM2.5 were monitored during the summer of 2008 to 2011 at Xinglong station,which is the regional background station of North China.The results indicated that the average concentration of NOx in the summer of the four years was（9.1±5.1）,（5.9±2.6）,（12.2±4.6） and（14.1±5.0） μg·m^-3,respectively,the daily maximum hourly concentration of O3 was（163.3±42.7）,（175.2±48.8）,（199.6±52.6） and（207.2±62.1） μg·m^-3,respectively,and the average concentration of PM2.5 was（59.8±44.6）,（44.4±28.0）,（58.1±34.2） and（52.5±36.7） μg·m^-3,respectively;in which,the concentrations of atmospheric pollutants had increased most significantly in 2010,especially the concentration of NOx.The average concentrations of NOx,O3 and PM2.5 increased by 106%,14% and 31%,respectively,compared to those in the summer of 2009.Because of the increase in the number of motor vehicle and the fast development of industry in the region of North China in 2010,the background concentrations of atmospheric pollutants were increasing obviously.The atmospheric oxidizer has also increased,the concentration of Ox reached（155.3±40.2） μg·m^-3 and has increased by 20% compared to the average concentration of the period during the summer of 2009,the compound pollution of high concentration of ozone and fine particles becomes more and more serious in North China.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2012年第11期3693-3704,共12页
Environmental Science
基金
北京市科技计划公益应用类项目(D09040903670902)
中国科学院战略性先导科技专项课题项目(XDA05100100)
