Emission profiles and formation pathways of 2,3,7,8-substituted and non-2,3,7,8-substituted polychlorinated dibenzo-p-dioxins and dibenzofurans in secondary copper smelters

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

	Emission profiles and formation pathways of 2,3,7,8-substituted and non-2,3,7,8-substituted polychlorinated dibenzo-p-dioxins and dibenzofurans in secondary copper smelters
	Li, Haifeng ; Liu, Wenbin ; Tang, Chen ; Lei, Rongrong ; Zhu, Wen
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2019-02-01
卷号	649 页码:473-481
关键词	Non-2,3,7,8-PCDD/Fs Secondary copper smelting Emission factors Transformation pathway
ISSN号	0048-9697
英文摘要	Secondary copper smelting production is one of the largest polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) emission sources in the world. However, the formations and emissions of non-2,3,7,8-PCDD/Fs have rarely been studied. Toxicology and metabolism studies have proved that non-2,3,7,8-PCDD/Fs may also be toxic to mammals. To better explore the pathways and mechanisms involved in transformation among non-2,3,7,8-PCDD/F and 2,3,7,8-PCDD/I congeners, their full picture was investigated in stack gas and fly ash samples collected in typical secondary copper smelting plants. The concentration ranges for 2,3,7,8-PCDD/Fs and non-2,3,7,8-PCDD/Fs in the stack gas samples were 0.09-5.24 ng/Nm(3) and 0.11-7.47 ng/Nm(3), respectively. The corresponding concentration ranges in the fly ash samples were 20-2712 ng/g and 2.7-818 ng/g. PCDD/F emissions were mainly from the oxidation stage, and these emissions contributed to 42.6-44.8% of the total emissions from the secondary copper smelting processes. Lower chlorinated PCDD/Fs partitioned more into the stack gas, whereas higher chlorinated PCDD/Fs were more likely to concentrate in the fly ash. Non-2.3.7,8-PCDD/Fs were more likely than 2,3,7,8-PCDD/Fs to associate with the gas phase. Chlorination transformation may occur among PCDD congeners, including 2,3,7,8-PCDD and non-2,3,7.8-PCDD congeners. (C) 2018 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/42939]
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
作者单位	1.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Environm Chem & Ecotoxicol, Res Ctr Ecoenvironm Sci, 18 Shuangqing Rd, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Li, Haifeng,Liu, Wenbin,Tang, Chen,et al. Emission profiles and formation pathways of 2,3,7,8-substituted and non-2,3,7,8-substituted polychlorinated dibenzo-p-dioxins and dibenzofurans in secondary copper smelters[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,649:473-481.
APA	Li, Haifeng,Liu, Wenbin,Tang, Chen,Lei, Rongrong,&Zhu, Wen.(2019).Emission profiles and formation pathways of 2,3,7,8-substituted and non-2,3,7,8-substituted polychlorinated dibenzo-p-dioxins and dibenzofurans in secondary copper smelters.SCIENCE OF THE TOTAL ENVIRONMENT,649,473-481.
MLA	Li, Haifeng,et al."Emission profiles and formation pathways of 2,3,7,8-substituted and non-2,3,7,8-substituted polychlorinated dibenzo-p-dioxins and dibenzofurans in secondary copper smelters".SCIENCE OF THE TOTAL ENVIRONMENT 649(2019):473-481.