气候变化领域集成服务门户(CCPortal): Morphological properties, chemical composition, cancer risks and toxicological potential of airborne particles from traffic and urban background sites

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DOI	10.1016/j.atmosres.2021.105837
	Morphological properties, chemical composition, cancer risks and toxicological potential of airborne particles from traffic and urban background sites
	Alves C.; Rienda I.C.; Vicente A.; Vicente E.; Gonçalves C.; Candeias C.; Rocha F.; Lucarelli F.; Pazzi G.; Kováts N.; Hubai K.; Pio C.; Tchepel O.
发表日期	2021
ISSN	0169-8095
卷号	264
英文摘要	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. © 2021 Elsevier B.V.
英文关键词	Cancer and non-cancer risks; Ecotoxicity; Metals; PAH and alkyl-PAH; PM10; SEM characterisation
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236563
作者单位	Department of Environment and Planning, Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, 3810-193, Portugal; Geobiosciences, Geotechnologies and Geoengineering Research Centre (GeoBioTec), Department of Geosciences, University of Aveiro, Aveiro, 3810-193, Portugal; INFN - Firenze, National Institute for Nuclear Physics - Florence division, Sesto Fiorentino, 50019, Italy; Centre for Environmental Sciences, University of Pannonia, Egyetem Str. 10, Veszprém, 8200, Hungary; Research Centre for Territory, Transports and Environment (CITTA), Department of Civil Engineering, University of Coimbra, Polo II, Coimbra, 3030-788, Portugal
推荐引用方式 GB/T 7714	Alves C.,Rienda I.C.,Vicente A.,et al. Morphological properties, chemical composition, cancer risks and toxicological potential of airborne particles from traffic and urban background sites[J],2021,264.
APA	Alves C..,Rienda I.C..,Vicente A..,Vicente E..,Gonçalves C..,...&Tchepel O..(2021).Morphological properties, chemical composition, cancer risks and toxicological potential of airborne particles from traffic and urban background sites.Atmospheric Research,264.
MLA	Alves C.,et al."Morphological properties, chemical composition, cancer risks and toxicological potential of airborne particles from traffic and urban background sites".Atmospheric Research 264(2021).