A conceptual framework for mixing structures in individual aerosol particles

doi:10.1002/2016JD025252

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院地球与行星物理重点实验室

	A conceptual framework for mixing structures in individual aerosol particles
	Li, Weijun 1; Sun, Jiaxing 1; Xu, Liang 1; Shi, Zongbo 2; Riemer, Nicole 3; Sun, Yele 4; Fu, Pingqing 4; Zhang, Jianchao 5; Lin, Yangting 5; Wang, Xinfeng 1
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2016-11-27
卷号	121 期号:22 页码:13784-13798
ISSN号	2169-897X
DOI	10.1002/2016JD025252
文献子类	Article
英文摘要	This study investigated the particle size- and age-dependent mixing structures of individual particles in clean and polluted air. Aerosols were classified into eight components: sea salt, mineral dust, fly ash, metal, soot, sulfates, nitrates, and organic matter (OM). Based on our aerosol classification, a particle that consists of two or more aerosol components can be defined as an internally mixed particle. Otherwise, it is considered to be an externally mixed particle. Within the internally mixed particle class, we identified four heterogeneous mixing structures: core-shell, dumbbell, OM coating, and dispersed OM, as well as one homogeneous-like mixing structure. Homogeneous-like mixing mainly occurred in fine particles (<1 mu m), while the frequency of heterogeneously mixed particles increased with particle size. Our study demonstrated that particle mixing structures depend on particle size and location and evolve with time. OM-coating and core-shell structures are important indicators for particle aging in air as long as they are distant from specific emission sources. Long-range transported particles tended to have core-shell and OM-coating structures. We found that secondary aerosol components (e.g., sulfates, nitrates, and organics) determined particle mixing structures, because their phases change following particle hydration and dehydration under different relative humidities. Once externally mixed particles are transformed into internally mixed particles, they cannot revert to their former state, except when semivolatile aerosol components are involved. Categorizing mixing structures of individual particles is essential for studying their optical and hygroscopic properties and for tracing the development of their physical or chemical properties over time.
WOS关键词	NORTH CHINA PLAIN ; ATMOSPHERIC PARTICLES ; OPTICAL-PROPERTIES ; DUST PARTICLES ; MINERAL DUST ; ORGANIC AEROSOL ; MEXICO-CITY ; STATE ; CLIMATE ; SOOT
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000393127800032
资助机构	National Key Project of MOST(JFYS2016ZY01002213) ; National Natural Science Foundation of China(41575116 ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences(XDB05020500) ; Shandong Provincial Science Fund for Distinguished Young Scholars, China(JQ201413) ; Shandong University(2014QY001/2015WLJH37) ; 41622504) ; National Key Project of MOST(JFYS2016ZY01002213) ; National Natural Science Foundation of China(41575116 ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences(XDB05020500) ; Shandong Provincial Science Fund for Distinguished Young Scholars, China(JQ201413) ; Shandong University(2014QY001/2015WLJH37) ; 41622504) ; National Key Project of MOST(JFYS2016ZY01002213) ; National Natural Science Foundation of China(41575116 ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences(XDB05020500) ; Shandong Provincial Science Fund for Distinguished Young Scholars, China(JQ201413) ; Shandong University(2014QY001/2015WLJH37) ; 41622504) ; National Key Project of MOST(JFYS2016ZY01002213) ; National Natural Science Foundation of China(41575116 ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences(XDB05020500) ; Shandong Provincial Science Fund for Distinguished Young Scholars, China(JQ201413) ; Shandong University(2014QY001/2015WLJH37) ; 41622504)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/53139]
专题	地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者	Li, Weijun
作者单位	1.Shandong Univ, Environm Res Inst, Jinan, Peoples R China 2.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham, W Midlands, England 3.Univ Illinois, Dept Atmospher Sci, Champaign, IL USA 4.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Phys & Atmospher, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China 6.China Univ Min & Technol, State Key Lab Coal Resources & Safe Min, Beijing, Peoples R China 7.Chinese Acad Meteorol Sci, Key Lab Atmospher Chem, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Li, Weijun,Sun, Jiaxing,Xu, Liang,et al. A conceptual framework for mixing structures in individual aerosol particles[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2016,121(22):13784-13798.
APA	Li, Weijun.,Sun, Jiaxing.,Xu, Liang.,Shi, Zongbo.,Riemer, Nicole.,...&Wang, Wenxing.(2016).A conceptual framework for mixing structures in individual aerosol particles.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,121(22),13784-13798.
MLA	Li, Weijun,et al."A conceptual framework for mixing structures in individual aerosol particles".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 121.22(2016):13784-13798.