title: [Characteristics of atmospheric pollutants in Beijing, Zhuozhou, Baoding and Shijiazhuang during the period of summer and autumn].
abstract: In order to evaluate the potential impact of the atmospheric pollution in Beijing by those cities which located southwest of it, the observations of PM10, NO(x) and O3 were conducted during the period of summer-autumn (Jul. 16-Oct. 15, 2009) in Beijing, Zhuozhou, Baoding and Shijiazhuang online, with the automated instruments which conform to international standards. The results showed that the principal pollutant was PM10, and the average concentration was (99 +/- 88), (121 +/- 74), (141 +/- 92) and (180 +/- 107) microg/m3, respectively. The concentration of NO(x) was (66 +/- 48), (23 +/- 14), (47 +/- 35) and (52 +/- 32) microg/m3, respectively. Ozone, the photochemical pollutant, the daily maximum concentration hourly was (107 +/- 60), (128 +/- 55), (164 +/- 61) and (120 +/- 54) microg/m3, respectively. Owing to the emission of local sources, the atmospheric PM10 pollution of Shijiazhuang was the most serious in 4 cities, in order was Baoding, Zhuozhou and Beijing. However, the average concentration of O3 in Baoding was the highest for the dual influence of Beijing and Shijiazhuang. Two episodes of heavy regional atmospheric pollution in July 2009 were analyzed with the surface meteorological data and backward trajectory model. The results suggested that the air quality in Beijing and the surrounding areas was significant influenced by the three cities of Hebei province in summer-autumn.
authors.affiliation: Institute of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing 210044, China. designwuying@163.com
authors.forename: Ying
authors.initials: Y
authors.lastname: Wu
authors.forename: Dong-Sheng
authors.initials: DS
authors.lastname: Ji
authors.forename: Tao
authors.initials: T
authors.lastname: Song
authors.forename: Bin
authors.initials: B
authors.lastname: Zhu
authors.forename: Yue-Si
authors.initials: YS
authors.lastname: Wang
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D001272:Atmosphere; D002681:China; D002947:Cities; D004784:Environmental Monitoring; D009589:Nitrogen Oxides / Q000032:analysis; D010126:Ozone / Q000032:analysis; D052638:Particulate Matter / Q000032:analysis*; D012621:Seasons
chemical_list: D000393:Air Pollutants; D009589:Nitrogen Oxides; D052638:Particulate Matter; D010126:Ozone