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metadata.dc.type: article
Título : Evaluation of Sources and Patterns of Elemental Composition of PM2.5 at Three Low-Income Neighborhood Schools and Residences in Quito, Ecuador
Autor : Armijos Moreta, Rodrigo Xavier
Weigel, Mary Margaret
Palabras clave : ELEMENTAL COMPOSITION;PM2.5;ENRICHMENT FACTORS;PRINCIPAL COMPONENT ANALYSIS;SCHOOLS;RESIDENCES;QUITO
Fecha de publicación : 2017
Citación : Raysoni, A., Armijos, R., Weigel, M., et al. (2017). Evaluation of Sources and Patterns of Elemental Composition of PM2.5 at Three Low-Income Neighborhood Schools and Residences in Quito, Ecuador. International Journal of Environmental Research and Public Health. Vol. 14(7): 674.
Citación : DOI;10.3390/ijerph14070674
Resumen : Elemental characterization of fine particulate matter was undertaken at schools and residences in three low income neighborhoods in Quito, Ecuador. The three zones were located in the northern (Cotocollao), south central (El Camal), and south east (Los Chillos) neighborhoods and were classified as zones 1–3, respectively. Forty elements were quantified via ICP-MS analysis. Amongst the geogenic elements, the concentration of Si was the most abundant followed by S, Al, and Ca. Elements with predominantly anthropogenic sources such as Zn, V, and Ni were higher in zone 3 school followed by zone 2 and zone 1 schools. Enrichment factors were calculated to study the role of crustal sources in the elemental concentrations. Geogenic elements, except K, all had values <10 and anthropogenic elements such as Ni, V, Zn, Pb, As, Cr had >10. Principal Component Analysis suggested that Ni and V concentrations were strongly attributable to pet coke and heavy oil combustion. Strong associations between As and Pb could be attributed to traffic and other industrial emissions. Resuspended dust, soil erosion, vehicular emissions (tailpipe, brake and tire wear, and engine abrasion), pet coke, heavy oil combustion, and heavy industrial operations were major contributors to air pollution.
metadata.dc.description.uri: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5551112/
URI : http://repositorio.educacionsuperior.gob.ec/handle/28000/5104
ISSN : 1660-4601
1661-7827
Aparece en las colecciones: Proyecto Prometeo

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