DOI: 10.1016/j.atmosenv.2014.12.005
Scopus记录号: 2-s2.0-84917683186
论文题名: Change characteristic of atmospheric particulate mercury during dust weather of spring in qingdao, china
作者: Zhang Y ; , Liu R ; , Wang Y ; , Cui X ; , Qi J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 102 起始页码: 376
结束页码: 383
语种: 英语
英文关键词: Dry deposition
; Dust weather
; Particulate mercury
; Qingdao
; Transport route
Scopus关键词: Atmospheric aerosols
; Atmospheric movements
; Deposition
; Dust
; Mercury (metal)
; Atmospheric particulate
; Distribution characteristics
; Dry deposition
; Dry deposition fluxes
; Particulate mercury
; Qingdao
; Transport distances
; Transport routes
; Air pollution
; mercury
; aerosol composition
; air sampling
; atmospheric deposition
; dust
; mercury (element)
; pollutant transport
; spatiotemporal analysis
; aerosol
; Article
; atmosphere
; atmospheric transport
; China
; dry deposition
; dust
; Japan
; Kazakhstan
; Mongolia
; South Korea
; spring
; weather
; China
; Japan
; Qingdao
; Shandong
; South Korea
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: Atmospheric aerosol samples were collected during dust weather of spring from 2008 to 2011 in Qingdao, in which the concentrations of atmospheric particulate mercury (PHg) were measured to analyze its distribution characteristics and source. PHg concentration during the study ranged from 0.050ngm-3 to 0.788ngm-3 with the average 0.292ngm-3 in dust day, while 0.085ngm-3 to 0.444ngm-3 with the average 0.188ngm-3 in non-dust day. PHg concentration in dust day is far higher than that in some cities of South Korea and Japan and comparable to some cities in China. There was a statistically power function between PHg/TSP and TSP concentrations, which meant that intense dust (high TSP) brought particles with low mercury content. The estimated dry deposition flux of PHg is 0.9-14.2ngm-2h-1 with the mean 5.26ngm-2h-1 in dust day. The mercury deposition flux in a dust day accounts for almost 1% annual flux, which should be paid attention in the regional and global cycle of mercury. The trajectories are categorized into 4 sectors. Cluster 1 and cluster 4 were the main routes of dust to Qingdao, coming from Kazakhstan and north of Mongolia individually. There is higher TSP, and lower PHg/TSP in dust of cluster 4 compared with cluster 1, because of longer transport distance and faster movement speed. There is highest PHg/TSP in cluster 2 because of passing polluted East China. The slow transport speed, long stay at polluted developed region caused pollutants to accumulate in the aerosols. Differences of transport route, movement speed affects the mercury content significantly. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82030
Appears in Collections: 气候变化事实与影响
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作者单位: Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, College of Environment Science and Engineering, Qingdao, China
Recommended Citation:
Zhang Y,, Liu R,, Wang Y,et al. Change characteristic of atmospheric particulate mercury during dust weather of spring in qingdao, china[J]. Atmospheric Environment,2015-01-01,102