Distribution of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans in the Atmosphere of Beijing, China

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Distribution of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans in the Atmosphere of Beijing, China
	Zhou, Zhi-Guang ; Zhao, Bin ; Qi, Li ; Xu, Peng-Jun ; Ren, Yue ; Li, Nan ; Zheng, Sen ; Zhao, Hu ; Fan, Shuang ; Zhang, Ting ; Liu, Ai-Min ; Huang, Ye-Ru ; Shen, Li
刊名	AEROSOL AND AIR QUALITY RESEARCH
	2014
卷号	14 期号:4 页码:1269-1278
关键词	PCDD/Fs Atmosphere Beijing Seasonal and spatial variation Sources
ISSN号	1680-8584
中文摘要	Air samples were collected from six locations during the periods of February, 2011-March, 2012 in Beijing city. Samples were analyzed using HRGC-HRMS according to HJ 77. 2-2008. The concentrations, congener profiles, seasonal variation, spatial distribution, and sources identified were investigated. The mass concentrations of 2,3,7,8-substituted PCDD/Fs is 1750 to 10380 fg/m(3) with an average of 3670 fg/m(3). The highest concentration was observed at site DS in February 2011 and the lowest was at site NS in July 2011. The TEQ concentrations of PCDD/Fs ranged from 35.0 to 751 fg I-TEQ/m(3), with an average of 251 fg I-TEQ/m(3). The dominant contributor to total TEQ value is 2,3,7,8-PeCDFs, with an average contribution of 40%. Low-chlorinated PCDDs were observed in all samples in winter. The concentration and profiles exhibit obvious seasonal variation. The PCDD/Fs at six sampling sites did not show obvious spatial variation. Seasonal variation of PCDD/F concentrations indicated that the emission sources may be different. Fossil fuel combustion and automobiles may be the main dioxins emission sources during the heating period, whereas, in non-heating period, the automobiles alone are the main emission sources.
WOS记录号	WOS:000335817800020
公开日期	2015-03-24
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/9348]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Zhou, Zhi-Guang,Zhao, Bin,Qi, Li,et al. Distribution of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans in the Atmosphere of Beijing, China[J]. AEROSOL AND AIR QUALITY RESEARCH,2014,14(4):1269-1278.
APA	Zhou, Zhi-Guang.,Zhao, Bin.,Qi, Li.,Xu, Peng-Jun.,Ren, Yue.,...&Shen, Li.(2014).Distribution of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans in the Atmosphere of Beijing, China.AEROSOL AND AIR QUALITY RESEARCH,14(4),1269-1278.
MLA	Zhou, Zhi-Guang,et al."Distribution of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans in the Atmosphere of Beijing, China".AEROSOL AND AIR QUALITY RESEARCH 14.4(2014):1269-1278.