Physicochemical 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 fraction. A characterization of inorganic compounds (water soluble ions, major...

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Autores:
Ramirez Hernandez, Omar Javier
Sánchez De La Campa, Ana María
Amato, Fulvio
Moreno, Teresa
Silva Oliveira, Luis Felipe
De La Rosa, Jesús D
Tipo de recurso:
Article of journal
Fecha de publicación:
2018
Institución:
Corporación Universidad de la Costa
Repositorio:
REDICUC - Repositorio CUC
Idioma:
eng
OAI Identifier:
oai:repositorio.cuc.edu.co:11323/1270
Acceso en línea:
https://hdl.handle.net/11323/1270
https://doi.org/10.1016/j.scitotenv.2018.10.214
https://repositorio.cuc.edu.co/
Palabra clave:
Bogota
Chemical Composition
Non-Exhaust Emissions
PM10
Resuspension
SEM
Rights
openAccess
License
Atribución – No comercial – Compartir igual
id RCUC2_f1321fd2ff2d870c824094c26d9f256e
oai_identifier_str oai:repositorio.cuc.edu.co:11323/1270
network_acronym_str RCUC2
network_name_str REDICUC - Repositorio CUC
repository_id_str
dc.title.eng.fl_str_mv Physicochemical Characterization And Sources Of The Thoracic Fraction Of Road Dust In A Latin American Megacity
title Physicochemical Characterization And Sources Of The Thoracic Fraction Of Road Dust In A Latin American Megacity
spellingShingle Physicochemical Characterization And Sources Of The Thoracic Fraction Of Road Dust In A Latin American Megacity
Bogota
Chemical Composition
Non-Exhaust Emissions
PM10
Resuspension
SEM
title_short Physicochemical Characterization And Sources Of The Thoracic Fraction Of Road Dust In A Latin American Megacity
title_full Physicochemical Characterization And Sources Of The Thoracic Fraction Of Road Dust In A Latin American Megacity
title_fullStr Physicochemical Characterization And Sources Of The Thoracic Fraction Of Road Dust In A Latin American Megacity
title_full_unstemmed Physicochemical Characterization And Sources Of The Thoracic Fraction Of Road Dust In A Latin American Megacity
title_sort Physicochemical Characterization And Sources Of The Thoracic Fraction Of Road Dust In A Latin American Megacity
dc.creator.fl_str_mv Ramirez Hernandez, Omar Javier
Sánchez De La Campa, Ana María
Amato, Fulvio
Moreno, Teresa
Silva Oliveira, Luis Felipe
De La Rosa, Jesús D
dc.contributor.author.spa.fl_str_mv Ramirez Hernandez, Omar Javier
Sánchez De La Campa, Ana María
Amato, Fulvio
Moreno, Teresa
Silva Oliveira, Luis Felipe
De La Rosa, Jesús D
dc.subject.eng.fl_str_mv Bogota
Chemical Composition
Non-Exhaust Emissions
PM10
Resuspension
SEM
topic Bogota
Chemical Composition
Non-Exhaust Emissions
PM10
Resuspension
SEM
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 fraction. A characterization of inorganic compounds (water soluble ions, major and trace elements, organic and elemental 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 individual 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 traffic, 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 chemical 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 2018
dc.date.accessioned.none.fl_str_mv 2018-11-17T18:51:21Z
dc.date.available.none.fl_str_mv 2018-11-17T18:51:21Z
dc.date.issued.none.fl_str_mv 2019-02-20
dc.type.spa.fl_str_mv Artículo de revista
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dc.type.content.spa.fl_str_mv Text
dc.type.driver.spa.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.doi.spa.fl_str_mv https://doi.org/10.1016/j.scitotenv.2018.10.214
dc.identifier.instname.spa.fl_str_mv Corporación Universidad de la Costa
dc.identifier.reponame.spa.fl_str_mv REDICUC - Repositorio CUC
dc.identifier.repourl.spa.fl_str_mv https://repositorio.cuc.edu.co/
identifier_str_mv 00489697
Corporación Universidad de la Costa
REDICUC - Repositorio CUC
url https://hdl.handle.net/11323/1270
https://doi.org/10.1016/j.scitotenv.2018.10.214
https://repositorio.cuc.edu.co/
dc.language.iso.none.fl_str_mv eng
language eng
dc.rights.spa.fl_str_mv Atribución – No comercial – Compartir igual
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rights_invalid_str_mv Atribución – No comercial – Compartir igual
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.publisher.spa.fl_str_mv Science Of The Total Environment
institution Corporación Universidad de la Costa
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spelling Ramirez Hernandez, Omar JavierSánchez De La Campa, Ana MaríaAmato, FulvioMoreno, TeresaSilva Oliveira, Luis FelipeDe La Rosa, Jesús D2018-11-17T18:51:21Z2018-11-17T18:51:21Z2019-02-2000489697https://hdl.handle.net/11323/1270https://doi.org/10.1016/j.scitotenv.2018.10.214Corporación Universidad de la CostaREDICUC - Repositorio CUChttps://repositorio.cuc.edu.co/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 fraction. A characterization of inorganic compounds (water soluble ions, major and trace elements, organic and elemental 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 individual 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 traffic, 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 chemical 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. 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