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Organic air quality markers of indoor and outdoor PM 2.5 aerosols in primary schools from Barcelona

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dc.contributor.author van Drooge, Barend L.
dc.contributor.author Rivas, Ioar
dc.contributor.author Querol, Xavier
dc.contributor.author Sunyer Deu, Jordi
dc.contributor.author Grimalt Obrador, Joan
dc.date.accessioned 2020-07-29T06:40:46Z
dc.date.available 2020-07-29T06:40:46Z
dc.date.issued 2020
dc.identifier.citation van Drooge BL, Rivas I, Querol X, Sunyer J, Grimalt JO. Organic air quality markers of indoor and outdoor PM 2.5 aerosols in primary schools from Barcelona. Int J Environ Res Public Health. 2020; 17(10):3685. DOI: 10.3390/ijerph17103685
dc.identifier.issn 1661-7827
dc.identifier.uri http://hdl.handle.net/10230/45208
dc.description.abstract Airborne particulate matter with an aerodynamic diameter smaller than 2.5 µg, PM2.5 was regularly sampled in classrooms (indoor) and playgrounds (outdoor) of primary schools from Barcelona. Three of these schools were located downtown and three in the periphery, representing areas with high and low traffic intensities. These aerosols were analyzed for organic molecular tracers and polycyclic aromatic hydrocarbons (PAHs) to identify the main sources of these airborne particles and evaluate the air quality in the urban location of the schools. Traffic emissions were the main contributors of PAHs to the atmospheres in all schools, with higher average concentrations in those located downtown (1800-2700 pg/m3) than in the periphery (760-1000 pg/m3). The similarity of the indoor and outdoor concentrations of the PAH is consistent with a transfer of outdoor traffic emissions to the indoor classrooms. This observation was supported by the hopane and elemental carbon concentrations in PM2.5, markers of motorized vehicles, that were correlated with PAHs. The concentrations of food-related markers, such as glucoses, sucrose, malic, azelaic and fatty acids, were correlated and were higher in the indoor atmospheres. These compounds were also correlated with plastic additives, such as phthalic acid and diisobutyl, dibutyl and dicyclohexyl phthalates. Clothing constituents, e.g., adipic acid, and fragrances, galaxolide and methyl dihydrojasmonate were also correlated with these indoor air compounds. All these organic tracers were correlated with the organic carbon of PM2.5, which was present in higher concentrations in the indoor than in the outdoor atmospheres.
dc.description.sponsorship This study was sponsored by La Caixa Foundation, the European Commission (BREATHE Project, ERC 268479; EDCMET: H2020-HEALTH/0490-825762) and the Spanish Ministry of Science and Innovation (INTEMPOL: PGC2018-102288-B-I00).
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher MDPI
dc.relation.ispartof Int J Environ Res Public Health. 2020; 17(10):3685
dc.rights © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
dc.rights.uri http://creativecommons.org/licenses/by/4.0/
dc.title Organic air quality markers of indoor and outdoor PM 2.5 aerosols in primary schools from Barcelona
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.3390/ijerph17103685
dc.subject.keyword TRAP
dc.subject.keyword Indoor air quality
dc.subject.keyword Organic aerosol
dc.subject.keyword Playground
dc.subject.keyword Polycyclic aromatic hydrocarbons
dc.subject.keyword Primary schools
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/268479
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/825762
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/publishedVersion


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