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Size Differentiation of Individual Atmospheric Aerosol during Winter in Xi'an, China
Hu,TF(Hu,Tafeng)[1]; Cao,JJ(Cao,Junji)[1,4]; Shen,ZX(Shen,Zhenxing)[2]; Wang,GH(Wang,Gehui)[1,4]; Lee,SC(Lee, Shuncheng)[3]; Ho,KF(Ho, Kinfai)[1,3]
2012-10-30
发表期刊Aerosol and Air Quality Research
卷号12期号:5页码:951-960
文章类型期刊论文
摘要

Airborne particulate matter (including TSP, PM10, PM2.5, and PM1) were collected at an urban site in Xi'an during winter 2010. Individual particles were analyzed using scanning electron microscopy and energy dispersive X-ray spectrometer (SEM-EDX). The morphologies, size distributions, and relative abundance of aerosol particles in each size were summarized. The monomodal particle size distribution was found in all the samples under different weather conditions, with the peaks located at less than 1.0 mu m. The majority of particles were composed of soot, mineral dust, and tar balls, with minor fly ash particles. Soot aggregates were the predominant species (in numbers), ranging from 56.6% in TSP on a sunny day to 86.3% in PM1 on a cloudy day, with an average of 73.2% in all the samples. The particle mass concentration and chemical composition, including water-soluble inorganic ions, elemental compositions, organic carbon (OC) and elemental carbon (EC) contents of 24-hr integrated PM2.5, were also subject to chemical bulk analysis. Soot was predominantly observed in the PM2.5 samples (from 74.7% to 82.7% in numbers), whereas EC accounted for only a small amount (< 8%) of the PM2.5 mass. Corresponding to the mass concentrations of geological materials (29.2%, 44.5%, and 37.3% on sunny, cloudy, and hazy days), the number concentrations of mineral dust and fly ash particles on the sunny, cloudy, and hazy days were 14.6%, 7.1%, and 7.7%, respectively.

DOI10.4209/aaqr.2012.01.0011
收录类别SCIE ; EI
语种英语
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/10094
专题粉尘与环境研究室
通讯作者Hu,TF(Hu,Tafeng)[1]
作者单位1.Key Laboratory of Aerosol, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China;
2.Department of Environmental Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China;
3.Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hong Kong, China;
4.Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an 710049, China
推荐引用方式
GB/T 7714
Hu,TF,Cao,JJ,Shen,ZX,et al. Size Differentiation of Individual Atmospheric Aerosol during Winter in Xi'an, China[J]. Aerosol and Air Quality Research,2012,12(5):951-960.
APA Hu,TF,Cao,JJ,Shen,ZX,Wang,GH,Lee,SC,&Ho,KF.(2012).Size Differentiation of Individual Atmospheric Aerosol during Winter in Xi'an, China.Aerosol and Air Quality Research,12(5),951-960.
MLA Hu,TF,et al."Size Differentiation of Individual Atmospheric Aerosol during Winter in Xi'an, China".Aerosol and Air Quality Research 12.5(2012):951-960.
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