DOI: 10.1016/j.atmosenv.2015.08.022
Scopus记录号: 2-s2.0-84940069399
论文题名: Seasonal variations in atmospheric concentrations and gas-particle partitioning of PCDD/Fs and dioxin-like PCBs around industrial sites in Shanghai, China
作者: Die Q ; , Nie Z ; , Liu F ; , Tian Y ; , Fang Y ; , Gao H ; , Tian S ; , He J ; , Huang Q
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 119 起始页码: 220
结束页码: 227
语种: 英语
英文关键词: dl-PCBs
; Gas-particle partitioning
; PCDD/Fs
; Seasonal variations
Scopus关键词: Forecasting
; Gases
; Ionization of gases
; Polychlorinated biphenyls
; Atmospheric concentration
; Dioxin-like polychlorinated biphenyls
; Dl-PCBs
; Gas-particle equilibriums
; Gas-particle partitioning
; PCDD/Fs
; Polychlorinated dibenzo-p-dioxins and dibenzofurans
; Seasonal variation
; Organic pollutants
; dibenzofuran derivative
; polychlorinated biphenyl derivative
; polychlorinated dibenzodioxin
; polychlorinated dibenzofuran
; absorption
; adsorption
; aerosol
; air sampling
; atmospheric modeling
; concentration (composition)
; industrial location
; partition coefficient
; partitioning
; PCB
; PCDD
; seasonal variation
; temperature effect
; toxic substance
; vapor pressure
; absorption
; adsorption
; aerosol
; air sampling
; ambient air
; Article
; chimney
; China
; concentration (parameters)
; controlled study
; environmental temperature
; gas analysis
; gas particle partitioning
; human
; industrial area
; low temperature
; meteorology
; molecular weight
; oxidation
; phase partitioning
; photodegradation
; prediction
; priority journal
; seasonal variation
; summer
; surface area
; surface property
; vapor pressure
; winter
; China
; Shanghai
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: Gas and particle phase air samples were collected in summer and winter around industrial sites in Shanghai, China, to allow the concentrations, profiles, and gas-particle partitioning of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and dioxin-like polychlorinated biphenyls (dl-PCBs) to be determined. The total 2,3,7,8-substituted PCDD/F and dl-PCB toxic equivalent (TEQ) concentrations were 14.2-182 fg TEQ/m3 (mean 56.8 fg TEQ/m3) in summer and 21.9-479 fg TEQ/m3 (mean 145 fg TEQ/m3) in winter. The PCDD/Fs tended to be predominantly in the particulate phase, while the dl-PCBs were predominantly found in the gas phase, and the proportions of all of the PCDD/F and dl-PCB congeners in the particle phase increased as the temperature decreased. The logarithms of the gas-particle partition coefficients correlated well with the subcooled liquid vapor pressures of the PCDD/Fs and dl-PCBs for most of the samples. Gas-particle partitioning of the PCDD/Fs deviated from equilibrium either in summer or winter close to local sources, and the Junge-Pankow model and predictions made using a model based on the octanol-air partition coefficient fitted the measured particulate PCDD/F fractions well, indicating that absorption and adsorption mechanism both contributed to the partitioning process. However, gas-particle equilibrium of the dl-PCBs was reached more easily in winter than in summer. The Junge-Pankow model predictions fitted the dl-PCB data better than did the predictions made using the model based on the octanol-air partition coefficient, indicating that adsorption mechanism made dominated contribution to the partitioning process. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81545
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 Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China; College of Water Sciences, Beijing Normal University, Beijing, China; Scientific Research Academy of Guangxi Environmental Protection, Nanning, China
Recommended Citation:
Die Q,, Nie Z,, Liu F,et al. Seasonal variations in atmospheric concentrations and gas-particle partitioning of PCDD/Fs and dioxin-like PCBs around industrial sites in Shanghai, China[J]. Atmospheric Environment,2015-01-01,119