DOI: 10.1016/j.atmosenv.2015.07.041
Scopus记录号: 2-s2.0-84939423479
论文题名: Comparison in size and elemental composition of dust particles deposited to the surface and suspended in the air on the southwest Japan coast
作者: Fukushima S ; , Zhang D
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 118 起始页码: 157
结束页码: 163
语种: 英语
英文关键词: Dry deposition
; Dust
; Individual particle analysis
; Sea salt
; Sulfate
Scopus关键词: Air
; Deposition
; Ecosystems
; Particle size
; Sulfur compounds
; Deposition velocities
; Dry deposition
; Dust concentrations
; Elemental compositions
; Individual particle analysis
; Sea salts
; Sulfate
; Suspended particles
; Dust
; sodium chloride
; sodium ion
; sulfate
; sulfur
; atmospheric pollution
; chemical composition
; comparative study
; deposition velocity
; dry deposition
; dust
; marine atmosphere
; particle settling
; particle size
; sea salt
; sodium
; sulfate
; suspended particulate matter
; air analysis
; airborne particle
; Article
; atmosphere
; chemical composition
; dry deposition
; dust
; Japan
; particle size
; priority journal
; seashore
; suspended particulate matter
; velocity
; Asia
; Japan
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: Input of dust to the ocean via the atmosphere is one of the key processes driving the development of marine ecosystems. It is usually estimated with dust concentration and deposition velocity on the assumption that particles settling to the marine surface are similar in composition to those in the air. In this study, we compared suspended and dry deposited dust particles which were collected at a seaside site on the southwestern Japan coast in two Asian dust episodes. Results show that particles mixed with sea salt and sulfate occupied 47-67% of the suspended dust particles while the percentage was 15-26% for the deposited particles. Sulfur and sodium contents in the deposited particles were apparently less than in the suspended particles. The mode size of the suspended ones, 2-3 μm, was a little smaller than that of the dry deposited ones, 3-5 μm. However, after being weighted by deposition velocity, it was similar to the latter one. These results support particle size as the key factor in determining the dry deposition and indicate the difference of suspended and deposited dust particles in the mixture with sea salt and sulfate in the marine atmosphere. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81524
Appears in Collections: 气候变化事实与影响
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作者单位: Faculty of Environmental and Symbiotic Sciences, Prefectural University of Kumamoto, Kumamoto, Japan
Recommended Citation:
Fukushima S,, Zhang D. Comparison in size and elemental composition of dust particles deposited to the surface and suspended in the air on the southwest Japan coast[J]. Atmospheric Environment,2015-01-01,118