Physico–chemical characterization and sources of the thoracic fraction of road dust in a Latin American megacity

Road dust has been identified as one of the main sources of outdoor PM10 in Bogota (a Latin American megacity), but there are no studies that have analyzed the physicochemical characteristics and origins of its respirable frac- tion. A characterization of inorganic compounds (water soluble ions, maj...

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Autores: Ramírez, Omar Rafael, Sánchez de la Campa Verdona, Ana María, Amato, Fulvio, Moreno, Teresa, Silva, Luis F., Rosa Díaz, Jesús de la
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universidad de Huelva (UHU)
Repositorio:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Idioma:inglés
OAI Identifier:oai:ariasmontano.uhu.es:10272/24795
Acceso en línea:https://hdl.handle.net/10272/24795
Access Level:acceso abierto
Palabra clave:PM10
Non-exhaust emissions
Bogota
Chemical composition
Resuspension
SEM
25 Ciencias de la Tierra y del Espacio
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spelling Physico–chemical characterization and sources of the thoracic fraction of road dust in a Latin American megacityRamírez, Omar RafaelSánchez de la Campa Verdona, Ana MaríaAmato, FulvioMoreno, TeresaSilva, Luis F.Rosa Díaz, Jesús de laPM10Non-exhaust emissionsBogotaChemical compositionResuspensionSEM25 Ciencias de la Tierra y del EspacioRoad dust has been identified as one of the main sources of outdoor PM10 in Bogota (a Latin American megacity), but there are no studies that have analyzed the physicochemical characteristics and origins of its respirable frac- tion. A characterization of inorganic compounds (water soluble ions, major and trace elements, organic and ele- mental carbon) and an analysis of source contributions to the PM10 fraction of road dust were carried out in this study. A total of twenty road dust samples, selected from representative industrial, residential and commercial areas, were swept and resuspended to obtain the thoracic fraction. Size distribution by laser diffraction and indi- vidual particle morphology by Scanning Electron Microscopy were also evaluated. The data obtained revealed that the volume (%) of thoracic particles was higher in samples from industrial zones where heavy vehicular traf- fic, industrial emissions and deteriorated pavements predominated. Crustal elements were the most abundant species, accounting for 49–62% of the thoracic mass, followed by OC (13–29%), water-soluble ions (1.4–3.8%), EC (0.8–1.9%) and trace elements (0.2–0.5%). The Coefficient of Divergence was obtained to identify the spatial variability of the samples. A source apportionment analysis was carried out considering the variability of chem- ical profiles, enrichment factors and ratios of Fe/Al, K/Al, Ca/Al, Ti/Al, Cu/Sb, Zn/Sb, OC/TC and OC/EC. By means of a PCA analysis, five components were identified, including local soils and pavement erosion (63%), construction and demolition activities (13%), industrial emissions (6%), brake wear (5%) and tailpipe emissions (4%). These components accounted for 91% of the total variance. The results provide data to understand better one of the main sources of PM10 emissions in Bogota, such as road dust. These data will be useful to optimize environmental policies, and they may be used in future studies of human health and air quality modeling.Elsevier20192019-01-0120192019-01-01journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10272/24795reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelvainstname:Universidad de Huelva (UHU)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:ariasmontano.uhu.es:10272/247952026-06-02T14:58:11Z
dc.title.none.fl_str_mv Physico–chemical characterization and sources of the thoracic fraction of road dust in a Latin American megacity
title Physico–chemical characterization and sources of the thoracic fraction of road dust in a Latin American megacity
spellingShingle Physico–chemical characterization and sources of the thoracic fraction of road dust in a Latin American megacity
Ramírez, Omar Rafael
PM10
Non-exhaust emissions
Bogota
Chemical composition
Resuspension
SEM
25 Ciencias de la Tierra y del Espacio
title_short Physico–chemical characterization and sources of the thoracic fraction of road dust in a Latin American megacity
title_full Physico–chemical characterization and sources of the thoracic fraction of road dust in a Latin American megacity
title_fullStr Physico–chemical characterization and sources of the thoracic fraction of road dust in a Latin American megacity
title_full_unstemmed Physico–chemical characterization and sources of the thoracic fraction of road dust in a Latin American megacity
title_sort Physico–chemical characterization and sources of the thoracic fraction of road dust in a Latin American megacity
dc.creator.none.fl_str_mv Ramírez, Omar Rafael
Sánchez de la Campa Verdona, Ana María
Amato, Fulvio
Moreno, Teresa
Silva, Luis F.
Rosa Díaz, Jesús de la
author Ramírez, Omar Rafael
author_facet Ramírez, Omar Rafael
Sánchez de la Campa Verdona, Ana María
Amato, Fulvio
Moreno, Teresa
Silva, Luis F.
Rosa Díaz, Jesús de la
author_role author
author2 Sánchez de la Campa Verdona, Ana María
Amato, Fulvio
Moreno, Teresa
Silva, Luis F.
Rosa Díaz, Jesús de la
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv PM10
Non-exhaust emissions
Bogota
Chemical composition
Resuspension
SEM
25 Ciencias de la Tierra y del Espacio
topic PM10
Non-exhaust emissions
Bogota
Chemical composition
Resuspension
SEM
25 Ciencias de la Tierra y del Espacio
description Road dust has been identified as one of the main sources of outdoor PM10 in Bogota (a Latin American megacity), but there are no studies that have analyzed the physicochemical characteristics and origins of its respirable frac- tion. A characterization of inorganic compounds (water soluble ions, major and trace elements, organic and ele- mental carbon) and an analysis of source contributions to the PM10 fraction of road dust were carried out in this study. A total of twenty road dust samples, selected from representative industrial, residential and commercial areas, were swept and resuspended to obtain the thoracic fraction. Size distribution by laser diffraction and indi- vidual particle morphology by Scanning Electron Microscopy were also evaluated. The data obtained revealed that the volume (%) of thoracic particles was higher in samples from industrial zones where heavy vehicular traf- fic, industrial emissions and deteriorated pavements predominated. Crustal elements were the most abundant species, accounting for 49–62% of the thoracic mass, followed by OC (13–29%), water-soluble ions (1.4–3.8%), EC (0.8–1.9%) and trace elements (0.2–0.5%). The Coefficient of Divergence was obtained to identify the spatial variability of the samples. A source apportionment analysis was carried out considering the variability of chem- ical profiles, enrichment factors and ratios of Fe/Al, K/Al, Ca/Al, Ti/Al, Cu/Sb, Zn/Sb, OC/TC and OC/EC. By means of a PCA analysis, five components were identified, including local soils and pavement erosion (63%), construction and demolition activities (13%), industrial emissions (6%), brake wear (5%) and tailpipe emissions (4%). These components accounted for 91% of the total variance. The results provide data to understand better one of the main sources of PM10 emissions in Bogota, such as road dust. These data will be useful to optimize environmental policies, and they may be used in future studies of human health and air quality modeling.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-01-01
2019
2019-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10272/24795
url https://hdl.handle.net/10272/24795
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelva
instname:Universidad de Huelva (UHU)
instname_str Universidad de Huelva (UHU)
reponame_str Arias Montano. Repositorio Institucional de la Universidad de Huelva
collection Arias Montano. Repositorio Institucional de la Universidad de Huelva
repository.name.fl_str_mv
repository.mail.fl_str_mv
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