Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2017.02.005 |
Characterization of size-resolved urban haze particles collected in summer and winter at Taiyuan City, China using quantitative electron probe X-ray microanalysis | |
Geng, Hong1; Jin, Chun-Song1,2; Zhang, Dong-Peng2; Wang, Shu-Rong2; Xu, Xiao-Tian2; Wang, Xu-Ran2; Zhang, Yuan1,2; Wu, Li3; Ro, Chul-Un1,3 | |
2017-07-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2017 |
卷号 | 190 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; South Korea |
英文摘要 | The aim of the study is to characterize the size-resolved urban haze particles and investigate their modification in morphology and composition in summer and winter using the semi-quantitative electron probe X-ray micro-analysis (EPMA) based on both scanning and transmission electron microscopies equipped with ultrathin-window energy dispersive X-ray spectrometers (SEM-EDX and TEM-EDX). The haze and non-haze particles were collected through a seven-stage May cascade impactor on Dec. 29-30, 2009 and Jan. 8-9 and July 11-14, 2010 in Taiyuan, a typical inland city in the North China Plain. Approximately 3752 atmospheric particles in the size ranges of 4-2 mu m, 2-1 mu m, 1-0.5 mu m, and 0.5-025 mu m in aerodynamic diameter were measured and identified according to their secondary electron or TEM images and elemental atomic concentrations calculated through a Monte Carlo simulation program. Results show that on the haze days many reacted or aged mineral dust particles were encountered, in which the sulfate-containing ones outnumbered the nitrate-containing ones in the winter samples while it was on the contrary in the summer samples, suggesting different haze formation and evolution mechanisms in summer and winter. Furthermore, in the haze events (especially in summer), many CNOS-rich particles, likely mixtures of water-soluble organic carbon with (NH4)(2)SO4 or NH4HSO4, were observed not only in the submicron but also in the super-micron fractions. The simultaneous observation of the fresh and aged CNOS-rich particles in the same SEM or TEM images implied that the status and components of secondary particles were complicated and changeable. The significant increase of both elemental concentration ratios of [N]/[S] and [C]/[S] in the aged ones compared to the fresh ones indicated that NH4NO3 and secondary organic matter were likely absorbed onto (NH4)(2)SO4 or NH4HSO4 particles and mixed with them. K-rich, Fe-rich, and heavy metal-containing particles in TEM-EDX measurement were detected more in the winter haze samples than in the summer ones, suggesting that they tend to be smaller in size and mainly derive from anthropogenic biomass burning and coal combustion. It was concluded that the combined use of SEM-EDX and TEM-EDX can identify both submicron and super-micron urban haze particles in a straightforward way and trace their modifications in size, shape, mixing state, and chemical compositions in different seasons, helping address their evolution processes and hazards on human health. (c) 2017 Elsevier B.V. All rights reserved. |
英文关键词 | Urban haze particles Taiyuan Electron probe X-ray microanalysis SEM-EDX TEM-EDX |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399631900004 |
WOS关键词 | POLYCYCLIC AROMATIC-HYDROCARBONS ; AEROSOL-PARTICLES ; CHEMICAL CHARACTERISTICS ; ATMOSPHERIC PARTICLES ; VERTICAL-DISTRIBUTION ; INDIVIDUAL PARTICLES ; FORMATION MECHANISM ; SUBMICRON AEROSOL ; BACKGROUND SITE ; MIXING STATE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/38606 |
专题 | 地球科学 |
作者单位 | 1.Shanxi Univ, Inst Environm Sci, Taiyuan 030006, Peoples R China; 2.Shanxi Univ, Coll Environm & Resource, Taiyuan 030006, Peoples R China; 3.Inha Univ, Dept Chem, Incheon 402751, South Korea |
推荐引用方式 GB/T 7714 | Geng, Hong,Jin, Chun-Song,Zhang, Dong-Peng,et al. Characterization of size-resolved urban haze particles collected in summer and winter at Taiyuan City, China using quantitative electron probe X-ray microanalysis[J]. ATMOSPHERIC RESEARCH,2017,190. |
APA | Geng, Hong.,Jin, Chun-Song.,Zhang, Dong-Peng.,Wang, Shu-Rong.,Xu, Xiao-Tian.,...&Ro, Chul-Un.(2017).Characterization of size-resolved urban haze particles collected in summer and winter at Taiyuan City, China using quantitative electron probe X-ray microanalysis.ATMOSPHERIC RESEARCH,190. |
MLA | Geng, Hong,et al."Characterization of size-resolved urban haze particles collected in summer and winter at Taiyuan City, China using quantitative electron probe X-ray microanalysis".ATMOSPHERIC RESEARCH 190(2017). |
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