[Characteristics of atmospheric pollutants during the period of summer and autumn in Shijiazhuang].
Atmospheric pollutants and their concentration change characteristics during Beijing Olympics in Shijiazhuang were studied. Air quality was measured by automatic on-line continuous monitoring equipments in summer and autumn of 2007 and 2008. The objectives of this study were to identify the effect of pollutants decrease on atmospheric environment, and develop the potential influence to Beijing and surrounding areas. The results show that the pollutants concentration often exceeds state criterion except nitrogen oxides, O3 concentration in summer and autumn is higher, averaged hourly maximum concentration (O3-Max) is (177.2 +/- 63.0) and (105.8 +/- 61.7) microg x m(-3), the concentrations of NO and NO2 are (4.5 +/- 4.0), (32.7 +/- 12.4) microg x m(-3) and (21.5 +/- 16.9), (60.5 +/- 16.9) microg x m(-3) respectively, SO2 concentration is (72.0 +/- 27.5) and (92.0 +/- 44.4) microg x m(-3), PM2.5 and PM10 concentrations reach to (102.3 +/- 47.6), (153.3 +/- 58.3) microg x m(-3) and (95.8 +/- 50.0), (147.4 +/- 67.0) microg x m(-3). Generally, pollutants declined obviously in Olympics period, the concentrations of NOx, O3-Max, SO2, PM2.5 and PM10 are (43.8 +/- 15.0), (142.0 +/- 54.9), (52.4 +/- 18.8), (76.7 +/- 35.1) and (116.5 +/- 38.8) microg x m(-3), and the reduction ratio of SO2, PM2.5 and PM10 are 34.6%, 22.8% and 21.0% compared with the whole monitoring period in 2008. The actuality of atmospheric pollution in summer and autumn was analyzed systemically, and which provided scientific evidences for evaluating the control measures of pollutants emission.
Du
Wu-peng
WP
State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China. duwupeng@sina.com
Wang
Yue-si
YS
Song
Tao
T
Xin
Jin-yuan
JY
Cheng
Yi-song
YS
Ji
Dong-sheng
DS
D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000517:prevention & control*; D001272:Atmosphere; D002681:China; D004784:Environmental Monitoring; D009569:Nitric Oxide / Q000032:analysis; D010126:Ozone / Q000032:analysis; D012621:Seasons
D000393:Air Pollutants; D009569:Nitric Oxide; D010126:Ozone