Endotoxins in indoor air and settled dust in primary schools in a subtropical climate
Data(s) |
01/08/2013
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Resumo |
Endotoxins can significantly affect the air quality in school environments. However, there is currently no reliable method for the measurement of endotoxins and there is a lack of reference values for endotoxin concentrations to aid in the interpretation of measurement results in school settings. We benchmarked the “baseline” range of endotoxin concentration in indoor air, together with endotoxin load in floor dust, and evaluated the correlation between endotoxin levels in indoor air and settled dust, as well as the effects of temperature and humidity on these levels in subtropical school settings. Bayesian hierarchical modeling indicated that the concentration in indoor air and the load in floor dust were generally (<95th percentile) < 13 EU/m3 and < 24,570 EU/m2, respectively. Exceeding these levels would indicate abnormal sources of endotoxins in the school environment, and the need for further investigation. Metaregression indicated no relationship between endotoxin concentration and load, which points to the necessity for measuring endotoxin levels in both the air and settled dust. Temperature increases were associated with lower concentrations in indoor air and higher loads in floor dust. Higher levels of humidity may be associated with lower airborne endotoxin concentrations. |
Formato |
application/pdf |
Identificador | |
Publicador |
American Chemical Society |
Relação |
http://eprints.qut.edu.au/62898/2/62898.pdf http://pubs.acs.org/doi/abs/10.1021/es4023706 DOI:10.1021/es4023706 Salonen, Heidi, Duchaine, Caroline, Létourneau, Valérie, Mazaheri, Mandana, Clifford, Sam, & Morawska, Lidia (2013) Endotoxins in indoor air and settled dust in primary schools in a subtropical climate. Environmental Science & Technology, 47(17), pp. 9882-9890. http://purl.org/au-research/grants/ARC/LP0990134 |
Direitos |
Copyright 2013 American Chemical Society This article is freely available from the American Chemical Society website 12 months after the publication date. See links to publisher website in this record. |
Fonte |
School of Chemistry, Physics & Mechanical Engineering; Institute of Health and Biomedical Innovation; Science & Engineering Faculty |
Palavras-Chave | #040101 Atmospheric Aerosols #050206 Environmental Monitoring #090799 Environmental Engineering not elsewhere classified #111799 Public Health and Health Services not elsewhere classified #129999 Built Environment and Design not elsewhere classified #Endotoxins #Air quality #children #schools #dust #indoor environments |
Tipo |
Journal Article |