title: Comparative study on PCDD/F pollution in soil from the Antarctic, Arctic and Tibetan Plateau.
abstract: The concentrations of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) in 35 soil samples collected from Fildes Peninsula in the Antarctic, Ny-Ålesund in the Arctic, and Zhangmu-Nyalam in the Tibetan Plateau were reported in this study. A comparison of the total concentration and TEQ of PCDD/Fs at the Three Poles was conducted. Both the total concentration and TEQ of PCDD/Fs demonstrates a decreasing trend in the order of Zhangmu-Nyalam (mean: 26.22 pg/g, 0.37 pg I-TEQ/g)>Ny-Ålesund (mean: 9.97 pg/g, 0.33 pg I-TEQ/g)>Fildes Peninsula (mean: 2.18 pg/g, 0.015 pg I-TEQ/g) (p<0.05). In all samples, the congener and homologue profiles dominated with higher (seven and eight) chlorinated PCDD/Fs (more than 85% of the total mass percentage of PCDD/Fs) at the Three Poles. Finally, a FLEXPART backward simulation was used to preliminarily identify the potential local and regional anthropogenic sources of PCDD/Fs. The results imply that the air masses passing over surrounding regions with significant PCDD/F emissions might contribute to the occurrence of PCDD/Fs in both the Arctic and Tibetan Plateau.
authors.affiliation: State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Collaborative Innovation Center for Regional Environmental Quality, Peking University, Beijing 100871, PR China.
authors.forename: Shenglan
authors.initials: S
authors.lastname: Jia
authors.affiliation: School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Wang
authors.affiliation: State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Collaborative Innovation Center for Regional Environmental Quality, Peking University, Beijing 100871, PR China.
authors.forename: Li
authors.initials: L
authors.lastname: Li
authors.affiliation: State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Collaborative Innovation Center for Regional Environmental Quality, Peking University, Beijing 100871, PR China; Norwegian Institute for Air Research, P.O. Box 100, 2027 Kjeller, Norway.
authors.forename: Xuekun
authors.initials: X
authors.lastname: Fang
authors.affiliation: Beijing General Research Institute of Mining & Metallurgy, Beijing 100160, PR China.
authors.forename: Yehong
authors.initials: Y
authors.lastname: Shi
authors.affiliation: State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Collaborative Innovation Center for Regional Environmental Quality, Peking University, Beijing 100871, PR China.
authors.forename: Weiguang
authors.initials: W
authors.lastname: Xu
authors.affiliation: State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Collaborative Innovation Center for Regional Environmental Quality, Peking University, Beijing 100871, PR China. Electronic address: jianxin@pku.edu.cn.
authors.forename: Jianxin
authors.initials: J
authors.lastname: Hu
mesh_terms: D000864:Antarctic Regions; D001110:Arctic Regions; D001572:Benzofurans / Q000032:analysis*; D004784:Environmental Monitoring; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis*; D018609:Tibet
chemical_list: D001572:Benzofurans; D000072317:Polychlorinated Dibenzodioxins; D012987:Soil; D012989:Soil Pollutants; C023614:dibenzofuran
keywords: FLEXPART model; PCDD/Fs; Soil; Three Poles