DOI: 10.1016/j.atmosenv.2015.03.018
Scopus记录号: 2-s2.0-84925271745
论文题名: Atmospheric particulate mercury in the megacity Beijing: Spatio-temporal variations and source apportionment
作者: Schleicher N ; J ; , Schäfer J ; , Blanc G ; , Chen Y ; , Chai F ; , Cen K ; , Norra S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 109 起始页码: 251
结束页码: 261
语种: 英语
英文关键词: Air pollution
; Mercury (Hg)
; Particle-bound mercury (HgP)
; Urban aerosols
Scopus关键词: Aerosols
; Air pollution
; Mercury (metal)
; Atmospheric particulate
; Industrial activities
; Mercuries (Hg)
; Meteorological condition
; Monitoring activities
; Particle bound mercury
; Spatio-temporal variation
; Urban aerosols
; Coal combustion
; coal
; mercury
; particulate mercury
; unclassified drug
; aerosol composition
; air sampling
; coal
; combustion
; megacity
; mercury (element)
; particle size
; pollutant source
; spatiotemporal analysis
; aerosol
; air pollution
; air quality
; Article
; atmosphere
; atomic absorption spectrometry
; China
; coal combustion
; cold vapor atomic absorption spectrometry
; combustion
; comparative study
; exhaust gas
; heating
; human
; limit of detection
; mass spectrometry
; meteorology
; priority journal
; seasonal variation
; spatiotemporal analysis
; summer
; winter
; Beijing [China]
; China
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: Particulate mercury (HgP) concentrations in weekly aerosol samples (PM2.5 and TSP) from Beijing, China, were measured for a complete year. In addition, spatial differences were measured for a shorter time period at four different sites and potential source materials were analyzed. Average HgP concentrations in PM2.5 samples were 0.26ng/m3 for day-time PM2.5, 0.28ng/m3 for night-time PM2.5, and 0.57ng/m3 for TSP samples, respectively. Coal combustion was identified as the major source of HgP in Beijing. Other sources included industrial activities as well as red color on historical buildings as a minor contribution. Spatial differences were pronounced with highest concentrations in the inner city (inside the 3rd ring road). The results further showed a strong seasonality with highest concentrations in winter and lowest in summer due to local meteorological conditions (precipitation in summer and stagnant conditions and low mixing layer height in winter) as well as seasonal sources, such as coal combustion for heating purposes. Day-night differences also showed a seasonal pattern with higher night-time concentrations during summer and higher day-time concentrations during winter. Compared to other cities worldwide, the HgP concentrations in Beijing were alarmingly high, suggesting that airborne particulate Hg should be the focus of future monitoring activities and mitigation measures. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81821
Appears in Collections: 气候变化事实与影响
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作者单位: Institute of Mineralogy and Geochemistry, Karlsruhe Institute of Technology, Karlsruhe, Germany; Université de Bordeaux, UMR 5805 EPOC, Pessac Cedex, France; Institute of Urban and Regional Atmospheric Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing, China; Department of Earth Sciences and Resources, China University of Geosciences (CUG), Beijing, China
Recommended Citation:
Schleicher N,J,, Schäfer J,et al. Atmospheric particulate mercury in the megacity Beijing: Spatio-temporal variations and source apportionment[J]. Atmospheric Environment,2015-01-01,109