Preliminary investigation of polychlorinated dibenzo-p-dioxin and dibenzofuran, polychlorinated naphthalene, and dioxin-like polychlorinated biphenyl concentrations in ambient air in an industrial park at the northeastern edge of the Tibet–Qinghai Plateau, China

Ambient air samples collected in an industrial park at the northeastern edge of the Tibet–Qinghai Plateau (China) were analyzed for polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), polychlorinated naphthalenes (PCNs), and dioxin-like (dl) polychlorinated biphenyls (PCBs). The PCDD/F, P...

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Bibliographic Details
Published in:The Science of the total environment 2019-01, Vol.648, p.935-942
Main Authors: Hu, Jicheng, Wu, Jing, Xu, Chenyang, Zha, Xiaoshuo, Hua, Ying, Yang, Liwen, Jin, Jun
Format: Article
Language:English
Subjects:
Dioxin-like polychlorinated biphenyls
Dioxins
Industrial park
Polychlorinated naphthalenes
Source
Tibet–Qinghai Plateau
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Summary:Ambient air samples collected in an industrial park at the northeastern edge of the Tibet–Qinghai Plateau (China) were analyzed for polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), polychlorinated naphthalenes (PCNs), and dioxin-like (dl) polychlorinated biphenyls (PCBs). The PCDD/F, PCN, and dl-PCB concentrations were 1.18–2.18, 21.9–75.1, and 0.49–0.90 pg/m3, respectively. The concentrations of these compounds were clearly higher than that observed at a remote site and were comparable with those found in ambient air in industrial areas in other locations. A principal component analysis indicated that emissions from local industrial sites (a secondary aluminum smelter, a cement kiln, and a lead–zinc smelter) at which thermal processes are performed were the sources of PCDD/Fs to the air. The combustion-related PCN congener profiles suggested that industrial thermal processes strongly affect PCN concentrations in ambient air at the industrial park. The results clearly indicated that the industrial park is a source of environmental PCDD/Fs and PCNs at the northeastern edge of the Tibet–Qinghai Plateau. [Display omitted] •An industrial park at the northeast edge of the Tibet–Qinghai Plateau was studied.•PCDD/Fs, PCNs, and PCBs were determined in the atmosphere.•PCDD/F and PCN profiles were significantly affected by local industrial plants.
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2018.08.241