Morphological properties, chemical composition, cancer risks and toxicological potential of airborne particles from traffic and urban background sites
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10773/37397 |
Resumo: | From a sampling campaign from December 2018 to June 2019, at a traffic and an urban background site in Coimbra, Portugal, two particulate matter (PM10) samples from each month were selected to characterise the morphology by scanning electron microscopy, to determine the organic and inorganic chemical composition by multiple analytical techniques and to assess the ecotoxicity by the Vibrio fischeri bioluminescence inhibition assay. PM10 concentrations in winter were approximately twice as high as those recorded in the spring. Biomass burning was the greatest contributor to air pollution in winter at both sites. The contribution of vehicle emissions to the PM10 at the roadside was, on average, 7 times higher than at the background location. Distinct particle morphologies were observed. Higher abundances of aggregates enriched in Fe, Ti, Ba, Cr, Co, Cu, Zr, Mn and soot particles were registered in samples from the roadside. Bivariate plots suggested common sources of PAHs, mostly traffic and biomass burning, across the city. Benzo[a]pyrene equivalent concentrations were within the values documented for other European cities. Cancer risks resulting from exposure to PAHs by inhalation were estimated to be low (10−6 ≤ to <10−4) for both sites. The noncarcinogenic risks from particulate trace elements were always higher than the target value of 1. Cancer risks for Cr were found to be higher than the acceptable level (10−6). The calculation of toxic units indicated that 64% of the samples from the roadside location were toxic and 14% very toxic, while the corresponding shares for the urban background site were 50% and 7%, respectively. Many PM10-bound constituents, especially markers of biomass burning (e.g. anhydrosugars) and traffic emissions (e.g. Fe, Cu, Zn), showed significant statistical correlations with toxicity. |
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Morphological properties, chemical composition, cancer risks and toxicological potential of airborne particles from traffic and urban background sitesPM10PAH and alkyl-PAHMetalsSEM characterisationCancer and non-cancer risksEcotoxicityFrom a sampling campaign from December 2018 to June 2019, at a traffic and an urban background site in Coimbra, Portugal, two particulate matter (PM10) samples from each month were selected to characterise the morphology by scanning electron microscopy, to determine the organic and inorganic chemical composition by multiple analytical techniques and to assess the ecotoxicity by the Vibrio fischeri bioluminescence inhibition assay. PM10 concentrations in winter were approximately twice as high as those recorded in the spring. Biomass burning was the greatest contributor to air pollution in winter at both sites. The contribution of vehicle emissions to the PM10 at the roadside was, on average, 7 times higher than at the background location. Distinct particle morphologies were observed. Higher abundances of aggregates enriched in Fe, Ti, Ba, Cr, Co, Cu, Zr, Mn and soot particles were registered in samples from the roadside. Bivariate plots suggested common sources of PAHs, mostly traffic and biomass burning, across the city. Benzo[a]pyrene equivalent concentrations were within the values documented for other European cities. Cancer risks resulting from exposure to PAHs by inhalation were estimated to be low (10−6 ≤ to <10−4) for both sites. The noncarcinogenic risks from particulate trace elements were always higher than the target value of 1. Cancer risks for Cr were found to be higher than the acceptable level (10−6). The calculation of toxic units indicated that 64% of the samples from the roadside location were toxic and 14% very toxic, while the corresponding shares for the urban background site were 50% and 7%, respectively. Many PM10-bound constituents, especially markers of biomass burning (e.g. anhydrosugars) and traffic emissions (e.g. Fe, Cu, Zn), showed significant statistical correlations with toxicity.Elsevier2023-12-15T00:00:00Z2021-12-15T00:00:00Z2021-12-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/37397eng0169-809510.1016/j.atmosres.2021.105837Alves, CéliaRienda, Ismael CasottiVicente, AnaVicente, EstelaGonçalves, CátiaCandeias, CarlaRocha, FernandoLucarelli, FrancoPazzi, GiuliaKováts, NoraHubai, KatalinPio, CasimiroTchepel, Oxanainfo:eu-repo/semantics/embargoedAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T12:12:10Zoai:ria.ua.pt:10773/37397Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:08:00.201990Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Morphological properties, chemical composition, cancer risks and toxicological potential of airborne particles from traffic and urban background sites |
title |
Morphological properties, chemical composition, cancer risks and toxicological potential of airborne particles from traffic and urban background sites |
spellingShingle |
Morphological properties, chemical composition, cancer risks and toxicological potential of airborne particles from traffic and urban background sites Alves, Célia PM10 PAH and alkyl-PAH Metals SEM characterisation Cancer and non-cancer risks Ecotoxicity |
title_short |
Morphological properties, chemical composition, cancer risks and toxicological potential of airborne particles from traffic and urban background sites |
title_full |
Morphological properties, chemical composition, cancer risks and toxicological potential of airborne particles from traffic and urban background sites |
title_fullStr |
Morphological properties, chemical composition, cancer risks and toxicological potential of airborne particles from traffic and urban background sites |
title_full_unstemmed |
Morphological properties, chemical composition, cancer risks and toxicological potential of airborne particles from traffic and urban background sites |
title_sort |
Morphological properties, chemical composition, cancer risks and toxicological potential of airborne particles from traffic and urban background sites |
author |
Alves, Célia |
author_facet |
Alves, Célia Rienda, Ismael Casotti Vicente, Ana Vicente, Estela Gonçalves, Cátia Candeias, Carla Rocha, Fernando Lucarelli, Franco Pazzi, Giulia Kováts, Nora Hubai, Katalin Pio, Casimiro Tchepel, Oxana |
author_role |
author |
author2 |
Rienda, Ismael Casotti Vicente, Ana Vicente, Estela Gonçalves, Cátia Candeias, Carla Rocha, Fernando Lucarelli, Franco Pazzi, Giulia Kováts, Nora Hubai, Katalin Pio, Casimiro Tchepel, Oxana |
author2_role |
author author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Alves, Célia Rienda, Ismael Casotti Vicente, Ana Vicente, Estela Gonçalves, Cátia Candeias, Carla Rocha, Fernando Lucarelli, Franco Pazzi, Giulia Kováts, Nora Hubai, Katalin Pio, Casimiro Tchepel, Oxana |
dc.subject.por.fl_str_mv |
PM10 PAH and alkyl-PAH Metals SEM characterisation Cancer and non-cancer risks Ecotoxicity |
topic |
PM10 PAH and alkyl-PAH Metals SEM characterisation Cancer and non-cancer risks Ecotoxicity |
description |
From a sampling campaign from December 2018 to June 2019, at a traffic and an urban background site in Coimbra, Portugal, two particulate matter (PM10) samples from each month were selected to characterise the morphology by scanning electron microscopy, to determine the organic and inorganic chemical composition by multiple analytical techniques and to assess the ecotoxicity by the Vibrio fischeri bioluminescence inhibition assay. PM10 concentrations in winter were approximately twice as high as those recorded in the spring. Biomass burning was the greatest contributor to air pollution in winter at both sites. The contribution of vehicle emissions to the PM10 at the roadside was, on average, 7 times higher than at the background location. Distinct particle morphologies were observed. Higher abundances of aggregates enriched in Fe, Ti, Ba, Cr, Co, Cu, Zr, Mn and soot particles were registered in samples from the roadside. Bivariate plots suggested common sources of PAHs, mostly traffic and biomass burning, across the city. Benzo[a]pyrene equivalent concentrations were within the values documented for other European cities. Cancer risks resulting from exposure to PAHs by inhalation were estimated to be low (10−6 ≤ to <10−4) for both sites. The noncarcinogenic risks from particulate trace elements were always higher than the target value of 1. Cancer risks for Cr were found to be higher than the acceptable level (10−6). The calculation of toxic units indicated that 64% of the samples from the roadside location were toxic and 14% very toxic, while the corresponding shares for the urban background site were 50% and 7%, respectively. Many PM10-bound constituents, especially markers of biomass burning (e.g. anhydrosugars) and traffic emissions (e.g. Fe, Cu, Zn), showed significant statistical correlations with toxicity. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-12-15T00:00:00Z 2021-12-15 2023-12-15T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10773/37397 |
url |
http://hdl.handle.net/10773/37397 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0169-8095 10.1016/j.atmosres.2021.105837 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/embargoedAccess |
eu_rights_str_mv |
embargoedAccess |
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:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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