文章基本信息

标题：Key factors determining indoor air PM10 concentrations in naturally ventilated primary schools in Belgrade, Serbia
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作者：Branislava Matic ; Uros Rakic ; Verica Jovanovic 等
期刊名称：Slovenian Journal of Public Health
印刷版ISSN：0351-0026
电子版ISSN：1854-2476
出版年度：2017
卷号：56
期号：4
页码：227-235
DOI：10.1515/sjph-2017-0031
语种：English
出版社：Walter de Gruyter GmbH
摘要：Introduction Indoor air quality (IAQ) is rated as a serious public health issue. Knowing children are accounted as more vulnerable to environmental health hazards, data are needed on air quality in schools. Methods A project was conducted from 2007 until 2009 (SEARCH, School Environment and Respiratory Health of Children), aiming to verify links between IAQ and children’s respiratory health. Study was conducted in ten primary schools on 735 children, in 44 classrooms. Children were randomly selected. Research tools and indicators used for children’s exposure to school environment were indoor and outdoor pollutants, two standardized questionnaires for school and classroom characteristics. In both classroom air and ambient air in front of them we measured, during a 5-day exposure period for continuous 24h measuring: carbon monoxide, carbon dioxide, indoor air temperature, relative humidity, and PM₁₀ during classes. Results PM₁₀ concentrations were significantly most frequent in an interval of ≥80.1μg/m³, that is, in the interval above 50μg/m³. Mean PM₁₀ value was 82.24±42.43 μg/m³, ranging from 32.00μg/m³ to of 197.00μg/m³. Conclusion The increase of outdoor PM₁₀ concentration significantly affects the increase of indoor PM₁₀. A statistically significant difference exists for average IAQ PM₁₀ concentrations vs. indicators of indoor thermal comfort zone (p<0.0001); they are lower in the classrooms with indicators within the comfort zone. Moreover, dominant factors for the increase of PM₁₀ are: high occupancy rate in the classroom (<2m² of space per child), high relative humidity (>75%), and indoor temperature beyond 23°C, as well as bad ventilation habits (keeping windows shut most of the time).
关键词：indoor air quality ; classrooms ; particulate matter ; PM10 ; primary schools ; exposure ; Serbia ; kakovost notranjega zraka ; učilnice ; trdni delci ; PM10 ; osnovne šole ; izpostavljenost ; Srbija