Indoor Air Quality in Naturally Ventilated Italian Classrooms

Fuoco, Fernanda Carmen, Stabile, Luca, Buonanno, Giorgio, Trassiera, Concepcion Vargas, Massimo, Angelamaria, Russi, Aldo, Mazaheri, Mandana, Morawska, Lidia, & Andrade, Alexandro (2015) Indoor Air Quality in Naturally Ventilated Italian Classrooms. Atmosphere, 6(11), pp. 1652-1675.

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Characterization of indoor air quality in school classrooms is crucial to children’s health and performance. The present study was undertaken to characterize the indoor air quality in six naturally ventilated classrooms of three schools in Cassino (Italy). Indoor particle number, mass, black carbon, CO2 and radon concentrations, as well as outdoor particle number were measured within school hours during the winter and spring season. The study found the concentrations of indoor particle number were influenced by the concentrations in the outdoors; highest BC values were detected in classrooms during peak traffic time. The effect of different seasons’ airing mode on the indoor air quality was also detected. The ratio between indoor and outdoor particles was of 0.85 ± 0.10 in winter, under airing conditions of short opening window periods, and 1.00 ± 0.15 in spring when the windows were opened for longer periods. This was associated to a higher degree of penetration of outdoor particles due to longer period of window opening. Lower CO2 levels were found in classrooms in spring (908 ppm) than in winter (2206 ppm). Additionally, a greater reduction in radon concentrations was found in spring. In addition, high PM10 levels were found in classrooms during break time due to re-suspension of coarse particles. Keywords: classroom; Ni/Nout ratio; airing by opening windows; particle number

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ID Code: 91276
Item Type: Journal Article
Refereed: Yes
Keywords: classroom, Ni/Nout ratio, airing by opening windows, particle number concentration, children
DOI: 10.3390/atmos6111652
ISSN: 2073-4433
Subjects: Australian and New Zealand Standard Research Classification > EARTH SCIENCES (040000) > ATMOSPHERIC SCIENCES (040100) > Atmospheric Aerosols (040101)
Australian and New Zealand Standard Research Classification > ENVIRONMENTAL SCIENCES (050000) > ENVIRONMENTAL SCIENCE AND MANAGEMENT (050200) > Environmental Monitoring (050206)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ENVIRONMENTAL ENGINEERING (090700) > Environmental Engineering not elsewhere classified (090799)
Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > PUBLIC HEALTH AND HEALTH SERVICES (111700) > Public Health and Health Services not elsewhere classified (111799)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute of Health and Biomedical Innovation
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2015 the authors; licensee MDPI, Basel, Switzerland.
Copyright Statement: This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (
Deposited On: 16 Dec 2015 04:22
Last Modified: 17 Dec 2015 07:13

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