Characterization of PM2.5 in the ambient air of Shanghai city by analyzing individual particles

Yue, Weisheng; Li, Xiaolin; Liu, Jiangfeng; Li, Yan; Yu, Xiaohan; Deng, Bangming; Wan, Tianmin; Zhang, Guilin; Huang, Youhua; He, Wei; Wei, Hua; Shao, Longyi; Li, Weijun; Yang, Shuai

doi:10.1016/j.scitotenv.2006.03.043

Cited by 116 publications

(51 citation statements)

References 19 publications

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“…6 and 7). Morphology of soot particles varied from chains to simple clusters, with size 1-2 µm which depend on different types of fuels, burning conditions, and atmospheric processes (Yue et al, 2006). The soot aggregates particles were abundant at RD than at SR area due to vehicular emissions which are dominant at RD site, suggesting vehicular pollution over this site.…”

Section: Soot Particlesmentioning

confidence: 97%

Study of Surface Morphology, Elemental Composition and Origin of Atmospheric Aerosols (PM2.5 and PM10) over Agra, India

Pipal

Jan

Satsangi

et al. 2014

Aerosol Air Qual. Res.

109

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In situ measurements of PM (PM 2.5 and PM 10 ) particles were carried out using a medium volume air sampler (offline) and particle number concentrations of PM were measured by a Grimm aerosol spectrophotometer (online) during the study period of 2010-2011. The morphology and elemental composition analyses of PM were performed by Scanning Electron Microscopy (SEM) and Energy Dispersive Spectrometry (EDS), respectively. The average mass concentrations of PM 2.5 and PM 10 were 97.2 and 242.6 µg/m 3 at roadside (RD) and 121.2 and 230.5 µg/m 3 at a semirural (SR) site, respectively. These concentrations were substantially higher than the NAAQS, WHO and USEPA standards. The highest mass and number concentrations of PM 2.5 and PM 10 were observed during winter, followed by those during the post-monsoon period and summer, with the lowest in the monsoon period. SEM and EDS analysis of PM indicated the presence of soot, mineral, tarballs, fly ash, aluminosilicates/silica, fluorine, carbon rich, and Cl-Na rich particles. Of these particles, soot, tarballs, and F-C rich particles dominate in PM 2.5 , whereas mineral, aluminosilicates, and Cl-Na rich particles dominate in PM 10 . The morphology and elemental composition of the particles varied over the seasons due to atmospheric processing. The highest carbon concentration (56%) was observed in PM 2.5 during summer at the RD, while in the monsoon, postmonsoon period and winter the carbon concentration was ~9% lower at the RD as compared to the SR. However, the concentration of carbon in PM 10 was ~38% higher at the RD as compared to SR during both summer and winter. Air mass backward trajectory cluster analysis was performed, and the results indicate that the aerosol loadings over Agra are mainly transported from the Middle East and Arabian Sea during the summer and monsoon period, while during the pre-monsoon period and winter the aerosol loadings came from the northern region, and were due to the burning of biomass and coal, as well as other local activities.

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Section: Soot Particlesmentioning

confidence: 97%

Study of Surface Morphology, Elemental Composition and Origin of Atmospheric Aerosols (PM2.5 and PM10) over Agra, India

Pipal

Jan

Satsangi

et al. 2014

Aerosol Air Qual. Res.

109

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“…These oxides are usually interpreted as goethite (FeO(OH)), hematite (Fe 2 O 3 ) or magnetite (Fe 3 O 4 ) in the atmospheric aerosols (Wang et al, 2006;Elzinga et al, 2011). Using scanning electron microscopy coupled with energy analysis (SEM-EDX), Yue et al (2006) showed that high concentration of Fe aerosol was related to metallurgical emissions. As also observed in urban Shanghai and air mass from mainland China by single particle mass spectrometry, this particle type was similarly attributed to metallurgic emissions from the steel manufacturing and processing facilities (Zhang et al, 2009;Furutani et al, 2011).…”

Section: Possible Sources For Fe-containing Particlesmentioning

confidence: 99%

Source and mixing state of iron-containing particles in Shanghai by individual particle analysis

Zhang

Lou

et al. 2014

Chemosphere

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“…10). In general, soot morphology depends on the different types of fuels, burning condition and atmospheric processes (Yue et al 2006). Soot particles are primarily emitted from burning and incomplete combustion of fossil fuels.…”

Section: Factor 3: Fuel and Biomass Burningmentioning

confidence: 99%

Characterization of PM2.5 by X-ray diffraction and scanning electron microscopy–energy dispersive spectrometer: its relation with different pollution sources

Satsangi

Yadav

2013

Int. J. Environ. Sci. Technol.

100

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Atmospheric PM 2.5 samples were collected by using Mini-Vol TAS air sampler. Samples were characterized directly on the collecting substrate using X-ray diffraction and scanning electron microscopy-energy dispersive spectrometer. From the analysis, it was found that Si dominate over other elements which follows the trend asBased on the measurements of a population of 840 particles, particle morphology was determined by quantitative image analyzer and value of roundness (R) varies from 0.23 to 1.0 (mean 0.75) which suggests that particles vary in shape from nearly irregular to perfectly spherical shape. The mineral particulate matter identified in the atmosphere of Pune was made up of: silicates (52 %), oxides (22 %), sulfates (8 %), phosphates (7 %), carbonates (3 %) and others. A factorial analysis was carried out to determine the main elements related to the emission sources such as soil and building material erosion (*44.6 %); oil combustion (20.6 %) and fuel and biomass burning (18.3 %). Besides these factors, soot particles are abundantly present in all studied samples. Mineral particles such as sulfates aggregated to soot could have produced localized climatic effect in Pune. The emphasis of the present study is to give insight and detailed analysis of morphological and chemical composition of atmospheric particles at discrete level.

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Characterization of PM2.5 in the ambient air of Shanghai city by analyzing individual particles

Cited by 116 publications

References 19 publications

Study of Surface Morphology, Elemental Composition and Origin of Atmospheric Aerosols (PM2.5 and PM10) over Agra, India

Study of Surface Morphology, Elemental Composition and Origin of Atmospheric Aerosols (PM2.5 and PM10) over Agra, India

Source and mixing state of iron-containing particles in Shanghai by individual particle analysis

Characterization of PM2.5 by X-ray diffraction and scanning electron microscopy–energy dispersive spectrometer: its relation with different pollution sources

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