DOI: 10.1016/j.atmosenv.2014.06.005
Scopus记录号: 2-s2.0-84902491160
论文题名: Selected organochlorine pesticides and polychlorinated biphenyls in atmosphere at Ruoergai high altitude prairie in eastern edge of Qinghai-Tibet Plateau and their source identifications
作者: Gai N ; , Pan J ; , Tang H ; , Tan K ; -Y ; , Chen D ; -Z ; , Zhu X ; -H ; , Lu G ; -H ; , Chen S ; , Huang Y ; , Yang Y ; -L
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 95 起始页码: 89
结束页码: 95
语种: 英语
英文关键词: Aerosol
; High plateau
; OCPs
; PCBs
; Sources
Scopus关键词: Aerosols
; Atmospheric movements
; Elementary particle sources
; Gases
; Isotopes
; Lead
; Pesticides
; Polychlorinated biphenyls
; Soils
; Volatile organic compounds
; Distribution characteristics
; Geographical environment
; High plateau
; OCPs
; Organochlorine pesticides
; PCBs
; Persistent organic pollutants
; Polychlorinated biphenyl (PCBs)
; Organic pollutants
; 1,1 dichloro 2,2 bis(4 chlorophenyl)ethane
; 1,1 dichloro 2,2 bis(4 chlorophenyl)ethylene
; chlorphenotane
; endosulfan
; hexachlorobenzene
; isotope
; lead
; lindane
; organochlorine pesticide
; polychlorinated biphenyl
; volatile agent
; aerosol composition
; agricultural emission
; air mass
; air temperature
; altitude
; atmospheric pollution
; concentration (composition)
; fugacity
; industrial emission
; organic pollutant
; organochlorine
; PCB
; persistence
; pesticide
; pollutant source
; pollutant transport
; prairie
; aerosol
; air pollution
; air sampling
; altitude
; ambient air
; article
; atmosphere
; atmospheric transport
; China
; controlled study
; exhaust gas
; gas
; gas chromatography
; high resolution gas chromatography
; industrial area
; isomer
; mass spectrometry
; molecular weight
; prairie
; priority journal
; rural area
; soil
; summer
; wind
; winter
; China
; Qinghai-Xizang Plateau
; Ruoergai Plateau
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: Compared to the low-altitude areas, high-altitude regions have low air temperature and relatively high snow precipitation. These climatological characteristics will affect the environmental behavior of persistent organic pollutants (POPs) in such a special geographical environment, leading to cold-trapping of certain POPs in these areas. Ruoergai highland prairie in the eastern edge of the Qinghai-Tibetan Plateau was selected to study the distribution characteristics of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in aerosols and gas phase samples collected in two seasons of 2011 and measured by isotope dilution-HRGC/HRMS method. OCPs and PCBs in the Ruoergai air were at low levels compared with the adjacent populated areas such as Lanzhou and Chengdu. Higher concentrations of POPs in aerosol and gas phase were observed in winter than in summer, showing the impact of monsoon on the transport of POPs to this region. Northwesterly winds in winter may transport OCPs and PCBs from industrial and agricultural areas in the northwestern China. HCB, α-HCH, and PCB 28 were the predominant compounds found in the air. Soil to air fugacity ratios show that Ruoergai soils behave as a secondary source of the relatively volatile compounds (HCHs, α-endosulfan, PCB 28 and 52) to the atmosphere during summer and behave as a sink of atmospheric DDTs due to the OC-rich soils as well as lower temperatures. Similar 206Pb/207Pb and 208Pb/207Pb ratios in Ruoergai aerosols to those of aerosols of Lanzhou and ores in Qinghai, Xinjiang, Kazakhstan, and Russia may indicate that the aerosol sources were mainly related to air mass passing over the neighboring regions and countries. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81093
Appears in Collections: 气候变化事实与影响
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作者单位: National Research Center for Geoanalysis, Beijing 100037, China; Division of Metrology in Chemistry, National Institute of Metrology, Beijing 100013, China
Recommended Citation:
Gai N,, Pan J,, Tang H,et al. Selected organochlorine pesticides and polychlorinated biphenyls in atmosphere at Ruoergai high altitude prairie in eastern edge of Qinghai-Tibet Plateau and their source identifications[J]. Atmospheric Environment,2014-01-01,95