DOI: 10.1016/j.atmosenv.2016.11.036
Scopus记录号: 2-s2.0-85006036309
论文题名: Three-year monitoring of atmospheric PCBs and PBDEs at the Chinese Great Wall Station, West Antarctica: Levels, chiral signature, environmental behaviors and source implication
作者: Wang P ; , Li Y ; , Zhang Q ; , Yang Q ; , Zhang L ; , Liu F ; , Fu J ; , Meng W ; , Wang D ; , Sun H ; , Zheng S ; , Hao Y ; , Liang Y ; , Jiang G
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 150 起始页码: 407
结束页码: 416
语种: 英语
英文关键词: Antarctic air
; Chiral signature
; Gas/particle partitioning
; PBDEs
; PCBs
; Temperature dependence
Scopus关键词: Atmospheric movements
; Atmospheric temperature
; Polychlorinated biphenyls
; Temperature distribution
; Chiral signatures
; Gas/particle partitioning
; Long-range atmospheric transports
; PBDEs
; Polybrominated diphenyl ether (PBDEs)
; Polychlorinated biphenyl (PCBs)
; Reciprocal temperature
; Temperature dependence
; Organic pollutants
; polybrominated diphenyl ether
; polychlorinated biphenyl
; sea water
; air quality
; air sampling
; atmospheric transport
; chemical property
; concentration (composition)
; partitioning
; PBDE
; PCB
; photodegradation
; pollutant source
; pollution monitoring
; regression analysis
; spatiotemporal analysis
; temperature
; air
; air monitoring
; air sampler
; air temperature
; Antarctica
; Article
; atmospheric transport
; chirality
; concentration (parameters)
; isomer
; priority journal
; seasonal variation
; temperature dependence
; wind
; Antarctica
; Great Wall Station
; King George Island
; South Shetland Islands
; West Antarctica
; Acacia koa
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: A three-year monitoring campaign (Jan 2011–2014) of polychlorinated biphenyl (PCBs) and polybrominated diphenyl ethers (PBDEs) was conducted using a high-volume air sampler at the Chinese Great Wall Station in King George Island, West Antarctica. The results showed that the Σ20PCB and Σ27PBDE concentrations (gas + particle) were 5.87–72.7 pg m−3 and 0.60–16.1 pg m−3, respectively. The lighter congeners especially PCB-11 (a non-Aroclor congener) dominated Σ20PCBs, while BDE-209 made a significant contribution to Σ27PBDEs apart from the lighter congeners (e.g., BDE-28 and -17). The chiral signature indicated nonracemic residues of chiral PCBs in the samples, suggesting potential influence of the secondary source, i.e. air-seawater exchange, on the atropisomer composition of chiral PCBs in air. Lighter PCBs (excluding PCB-11) showed significant temperature dependence in 2011 and 2012, reflecting the influence of revolatilization emission from the local surface. However, the shallow slopes of the regression lines for gaseous concentrations of POPs against reciprocal temperature (1/T) suggested long-range atmospheric transport (LRAT) as an important pathway for both PCBs and PBDEs into the Antarctic environment. Furthermore, correlations and ratios between different signature congeners deriving from the technical formulations indicated a local source of Deca-BDE and photodegradation of higher brominated BDEs. The gas/particle partitioning of POPs was also evaluated and the newly developed steady-state-based model generally showed a better performance than the equilibrium-state-based model. However, the former still underestimated the partitioning of most PCBs (log KOA <11) in particle phase, implying that further optimization is necessary when using it for those compounds with lower log KOA. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82245
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Institute of Environment and Health, Jianghan University, Wuhan, China; Key Laboratory of Research on Marine Hazards Forecasting, National Marine Environmental Forecasting Center, Beijing, China
Recommended Citation:
Wang P,, Li Y,, Zhang Q,et al. Three-year monitoring of atmospheric PCBs and PBDEs at the Chinese Great Wall Station, West Antarctica: Levels, chiral signature, environmental behaviors and source implication[J]. Atmospheric Environment,2017-01-01,150