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Author(s): Oliveira, M
Klara Slezakova
Madureira, J
Fernandes, ED
Delerue Matos, C
Morais, S
Maria do Carmo Pereira
Title: Polycyclic aromatic hydrocarbons in primary school environments: Levels and potential risks
Issue Date: 2017
Abstract: Although polycyclic aromatic hydrocarbons (PAHs) are priority air pollutants that strongly affect human health, information concerning the indoor exposures is still limited. This study characterized PAH levels in primary schools and evaluated risk for the respective students (aged 8-10 years) in comparison with school personnel. During January-April 2014, eighteen particulate-bound (PM2.5) PAHs (16 USEPA priority compounds, dibenzo[a, l]pyrene, benzo[j]fluoranthene) were collected (indoors and outdoors) at ten primary urban schools in Portugal. Total mean concentrations (Sigma(PAHs)) ranged 2.8-54 ng m(-3) in indoor air, whereas corresponding outdoor levels were 7.1-48 ng m(-3). Indoor/outdoor ratios of lighter congeners (2-3 aromatic rings) demonstrated a contribution from indoor origin while heavier PAHs (4-6 aromatic rings) originated mostly from infiltration of ambient air indoors; traffic (both from diesel and gasoline fuelled vehicles) was the predominant source of indoor PAHs. Total cancer risk of 8-10 years old children exceeded (up to 22 times) USEPA recommended guideline of 10(-6), and 7-87 times WHO health-based threshold of 10(-5). Risk due to indoor exposure in schools was 2-10 times higher than outdoors, mainly because of the higher amount of time that students spent indoors.
Subject: Ciências da Saúde
Health sciences
Related Information: info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Projetos Estratégicos/UID/EQU/00511/2013 - POCI-01-0145-FEDER-006939/Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia/LEPABE
info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Projectos de I&DT em Todos os Domínios Científicos/PTDC/DTP-SAP/1522/2012|FCOMP-01-0124-FEDER-028797/Como a qualidade do ar pode influenciar asma e alergia nas crianças/ARIA
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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