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Tracking PM10 composition and source assignment in classrooms and schoolyard: A case study near an industrial estate
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Orientador(es)
Resumo(s)
Schools are essential environments where people spend a significant portion of their early lives. Air quality in schools is shaped by various factors, including location, climate, and surrounding activities. Additionally, both indoor and outdoor sources can release chemicals into the air, potentially exposing pupils and staff to harmful conditions. This work characterised the chemical composition and potential sources of particulate matter (PM10) in a school, with different educational levels, located near an industrial estate in Portugal. PM10 daily samples were measured in classrooms and the schoolyard in two seasons. Samples were analysed by chromatography, inductively coupled plasma-mass spectrometry and thermo-optical transmittance techniques. Ancillary tools, such as factor analysis, multiple linear regression, meteorological analysis and air mass backward trajectories were applied to determine source contributions. Mass closure analysis revealed that organic matter accounted for similar to 39% of the PM10 mass in both seasons. Six sources were identified as contributors to PM10 in both the classrooms and the schoolyard. Common sources included biomass burning (18% and 28%), mineral dust (28% and 7.1%), sea salt (16% and 20%), and traffic (1.4% and 1.8%), for indoor and outdoor environments, respectively. In the classrooms, resuspension of calcium was a major contributor to PM10, whereas in the schoolyard, secondary aerosol formation played a significant role.
Descrição
Palavras-chave
Pm10 School environment Mass closure Factor analysis Source identification
Contexto Educativo
Citação
Charres, Isabella; Cipoli, Yago; Vicente, Estela D.; Furst, Leonardo; Nunes, Teresa; De La Campa, Ana M. Sanchez; Feliciano, Manuel; Alves, Celia (2026). Tracking PM10 composition and source assignment in classrooms and schoolyard: A case study near an industrial estate. Building and Environment. ISSN 0360-1323. 299, p. 1-15.
Editora
Elsevier