Morphological and chemical characteristics of atmospheric particles in the Metropolitan Zone of Toluca Valley (Mexico)

Romero-Guzmán, Elizabeth Teresita; Reyes-Gutiérrez, Lázaro Raymundo; Sandoval-Pérez, Anabel

doi:10.1080/02757540.2012.696619

Cited by 1 publication

(2 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Si rich particles correspond to Si-Al oxides possibly generated by some high temperature process of atmospheric origin and crustal dust. Apart from this Al and Si particles also come from cortical, construction activities and ceramic or cement manufacturing (Romero-Guzmán et al, 2012) and the presence of sulfur is due to industrial and mobile transport. It also come from incomplete combustion sources and is mainly associated with carbon and transition metals.…”

Section: Statistical and Trajectory Analysis For Source Identificatiomentioning

confidence: 99%

“…The elemental compositions of PM were observed with the help of energy dispersive spectrometer (EDS) which are semi quantitative analyses considering the bulk or individual particles. It is possible to correlate or confirm some chemical species such as C-S, Ca-S-O and SiAl-O, due to presence of compound derived from incomplete combustion, building tailing materials and aluminosilicates of cortical origin (Romero-Guzmán et al, 2012).…”

Section: Statistical and Trajectory Analysis For Source Identificatiomentioning

confidence: 99%

See 1 more Smart Citation

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.

105

View full text Add to dashboard Cite

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.

show abstract

Section: Statistical and Trajectory Analysis For Source Identificatiomentioning

confidence: 99%

Section: Statistical and Trajectory Analysis For Source Identificatiomentioning

confidence: 99%

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.

105

View full text Add to dashboard Cite

show abstract

Morphological and chemical characteristics of atmospheric particles in the Metropolitan Zone of Toluca Valley (Mexico)

Cited by 1 publication

References 38 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

Contact Info

Product

Resources

About