干旱区生态环境知识资源中心(Arid): Internal Structure of Asian Dust Particles over the Western North Pacific: Analyses Using Focused Ion Beam and Transmission Electron Microscopy

Arid

DOI	10.3390/atmos11010078
	Internal Structure of Asian Dust Particles over the Western North Pacific: Analyses Using Focused Ion Beam and Transmission Electron Microscopy
	Ueda, Sayako 1,2; Miki, Yusuke 2; Kato, Hiroki 2; Miura, Kazuhiko 2; Nakayama, Hiroyasu 3,4; Furutani, Hiroshi 3,5; Uematsu, Mitsuo 3,6
通讯作者	Ueda, Sayako
来源期刊	ATMOSPHERE
EISSN	2073-4433
出版年	2020
卷号	11 期号:1
英文摘要	Mineral dust aerosols, which comprise multiple mineral species, are transported far from their source desert areas to the open ocean. After an Asian dust outflow event was observed over a marine boundary layer in the western North Pacific on February 29, 2012 on research vessel (R/V) Hakuho Maru, two dust particles of about 6 mu m diameter were analyzed. First, they were sliced by using a focused ion beam (FIB). Their mineralogical structures and the elemental distribution of their cross-sections were subsequently analyzed with the use of transmission electron microscopy (TEM) and energy-dispersive X ray spectrometry (EDS). These analyses revealed that the dust particles consisted mainly of calcite and silica. Furthermore, Fe-containing domains were found in the submicrometer area surrounded by calcite and silica. A sulfur-containing domain that co-exists with calcium was found in a small domain near the particle surface, but no clear sign of atmospheric aging was found in most of the calcite domain. The inhomogeneous particle structure implies that the dissolution of iron and calcite in dust particles after ocean deposition depends on the physical structures of particles and their degree of aging according to atmospheric conditions during transport. Those factors must be adequately treated when estimating Asian dust effects on marine primary production.
英文关键词	aerosol iron aerosol solubility Asian dust atmospheric aging electron micrograph FIB mineral dust mineralogical structure
类型	Article
语种	英语
国家	Japan
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000516826200078
WOS关键词	SIZE DISTRIBUTION ; DIMETHYL SULFIDE ; STORM PARTICLES ; AEROSOL ; SPECTROMETRY ; TRANSPORT ; SULFATE ; OCEAN
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314119
作者单位	1.Nagoya Univ, Environm Study, Nagoya, Aichi 4648601, Japan; 2.Tokyo Univ Sci, Fac Sci, Tokyo 1628601, Japan; 3.Univ Tokyo, Atmosphere & Ocean Res Inst, Chiba 2778564, Japan; 4.Tokyo Metropolitan Govt, Tokyo 1638001, Japan; 5.Osaka Univ, Ctr Sci Instrument Renovat & Mfg Support, Osaka 5650871, Japan; 6.Ctr Environm Sci Saitama, Saitama 3470115, Japan
推荐引用方式 GB/T 7714	Ueda, Sayako,Miki, Yusuke,Kato, Hiroki,et al. Internal Structure of Asian Dust Particles over the Western North Pacific: Analyses Using Focused Ion Beam and Transmission Electron Microscopy[J],2020,11(1).
APA	Ueda, Sayako.,Miki, Yusuke.,Kato, Hiroki.,Miura, Kazuhiko.,Nakayama, Hiroyasu.,...&Uematsu, Mitsuo.(2020).Internal Structure of Asian Dust Particles over the Western North Pacific: Analyses Using Focused Ion Beam and Transmission Electron Microscopy.ATMOSPHERE,11(1).
MLA	Ueda, Sayako,et al."Internal Structure of Asian Dust Particles over the Western North Pacific: Analyses Using Focused Ion Beam and Transmission Electron Microscopy".ATMOSPHERE 11.1(2020).