The Impact of the Pollution Control Measures for the 2008 Beijing Olympic Games on the Chemical Composition of Aerosols
We investigated the difference in the concentrations of air pollutants between the period of the Beijing 2008 Olympic Games and the same periods in the prior three years (2005-2007, the reference period), in particular, the chemical composition of the particulate matter. PM10, Black carbon (BC), SO2 and NO2 were reduced by 33％, 31％, 32％ and 51％, respectively, whereas PM2.5 was not reduced during the Olympic period when compared to the reference period. Many pollution control measures that had been applied to prevent air pollution from contaminating the air quality in Beijing during the Olympic Games significantly reduced the larger particles (PM10), SO2 and NO2 but it did not as effectively reduce the much smaller particles (PM2.5). The sum of the measured water-soluble ions in total suspended particles (TSP) during the Olympic period was reduced by 35％ when compared to the reference period. We found a trend in the concentration of high-molecular weight polycyclic aromatic hydrocarbons (HMW-PAHs), which had 5-7 rings decreased during the Olympic period. We considered that the reduction of HMWPAHs that could be associated with the reduction of BC was due to the reduction of traffic flow resulting from traffic control measures implemented during that time period.
Aerosol Beijing Black carbon Olympic Games PM10 PM2.5 Polycyclic aromatic hydrocarbons (PAHs) TSP Water-soluble ions
Tomoaki Okuda Yuan Cheng Linlin Liang Shinichiro Matsuura Daisuke Yamaguchi Tomoaki Umemura Eriko Hanada Hiroki Orihara Shigeru Tanaka Kebin He Yongliang Ma
Dept. Applied Chemistry,Faculty of Science and Technology,Keio University,3-14-1 Hiyoshi,Kohoku-ku,Y Dept. Environmental Science and Engineering,Tsinghua University,Beijing 100084,China
国际会议
西安
英文
756-763
2011-08-17（万方平台首次上网日期，不代表论文的发表时间）