| Reduction of Atmospheric Polychlorinated Dibenzo-p-Dioxins and Dibenzofurans (PCDD/Fs) during the 2008 Beijing Olympic Games | |
| Li, Yingming; Thanh Wang; Wang, Pu; Ding, Lei; Li, Xiaomin; Wang, Yawei; Zhang, Qinghua; Li, An; Jiang, Guibin | |
| 2011-04-15 | |
| Source Publication | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| Volume | 45Issue:8Pages:3304—3309 |
| Abstract | A total of 120 air samples were collected at three urban and one rural location in Beijing, China in the summers of 2007-2010, and before, during, and after the Beijing 2008 Olympic Games (BOG), in order to assess the effectiveness of long-term and short-term emission-control measures in reducing polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in the atmosphere. During the BOG (August, 2008), the PCDD/Fs concentrations decreased to an average value of 1150 fg m(-3) (63 fg I-TEQ m(-3)), which was reduced by approximately 70% from the average in 2007 and by 29% from that in July 2008, before the Olympic event began. Although 2009-2010 levels of PCDD/Fs were significantly higher than 2008, the overall temporal trend was decreasing for summer months during the sampling campaign period. The apparent half-lives of atmospheric PCDD/Fs were estimated to be 3.2-5.8 years by statistically regressing the logarithm PCDD/Fs concentrations versus the number of years passed since 2006. The air concentrations of total suspended particulates (TSP) during the BOG ranged between 135 and 183 mu g m(-3), showing a 52% reduction from 2007 and 26% decrease from those prior to the Olympic event. No significant relationships were found between meteorological parameters (temperature, humidity, and wind speed) and PCDD/Fs or TSP during the BOG, whereas the PCDD/Fs concentrations were significantly dependent on the air quality (p < 0.05, positive against TSP and negative against visibility). This work is one of few temporal trend studies of atmospheric PCDD/Fs in mainland China, and provides unique insight into the effects of large-scale control measures in improving air quality and reducing one of the most ubiquitous and toxic organic pollutants in the environment. |
| Department | 环境化学与生态毒理学国家重点实验室 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/7068 |
| Collection | 环境化学与生态毒理学国家重点实验室 |
| Recommended Citation GB/T 7714 | Li, Yingming,Thanh Wang,Wang, Pu,et al. Reduction of Atmospheric Polychlorinated Dibenzo-p-Dioxins and Dibenzofurans (PCDD/Fs) during the 2008 Beijing Olympic Games[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2011,45(8):3304—3309. |
| APA | Li, Yingming.,Thanh Wang.,Wang, Pu.,Ding, Lei.,Li, Xiaomin.,...&Jiang, Guibin.(2011).Reduction of Atmospheric Polychlorinated Dibenzo-p-Dioxins and Dibenzofurans (PCDD/Fs) during the 2008 Beijing Olympic Games.ENVIRONMENTAL SCIENCE & TECHNOLOGY,45(8),3304—3309. |
| MLA | Li, Yingming,et al."Reduction of Atmospheric Polychlorinated Dibenzo-p-Dioxins and Dibenzofurans (PCDD/Fs) during the 2008 Beijing Olympic Games".ENVIRONMENTAL SCIENCE & TECHNOLOGY 45.8(2011):3304—3309. |
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