Status : Verified
| Personal Name | Rustria, Noy Imerson S. |
|---|---|
| Resource Title | Investigation of Particulate Matter (PM10 and PM2.5) Concentrations inside Metal, Wood, and Concrete School Laboratories |
| Date Issued | July 2026 |
| Abstract | This study investigated the variations of particulate matter (PM10 and PM2.5) concentrations inside three naturally ventilated university laboratories over a four-week monitoring period. Indoor and outdoor PM levels were monitored to evaluate spatial-temporal trends and the relationship between indoor and outdoor particle concentrations. Results showed that the indoor PM concentrations across the laboratories varied significantly and were strongly influenced by both indoor activities and outdoor PM concentrations. The Department of Mechanical Engineering (DME) shops exhibited higher PM levels during early mornings when it opened and gradually declined throughout the day. The elevated concentrations were due to overnight accumulation of particulates and the urban canyon effect. Higher concentrations were also observed during periods of ongoing activities near the operating machinery in both shops. Similarly, the Institute of Civil Engineering (ICE) laboratory exhibited elevated indoor PM concentrations during concrete preparation and testing activities. Correlation analysis further indicated that outdoor PM levels significantly influenced indoor concentrations in naturally ventilated spaces, particularly in the absence of indoor activities. In the metal shop, indoor PM was largely affected by outdoor air infiltration due to spatial separation of emission sources, while in the wood shop, outdoor influence dominated during inactive periods but was overtaken by indoor emissions during active operations. In contrast, in the concrete laboratory, the indoor PM levels were influenced by multiple factors such as human occupancy, indoor activities, relative humidity and temperature. Overall, indoor PM concentrations across all laboratories generally complied with the permissible limits by the Department of Environment and Natural Resources (DENR). However, these values exceed the guidelines by the World Health Organization (WHO) during specific activities and time periods whi |
| Degree Course | Master of Science in Environmental Engineering - Air Quality Management Track |
| Language | English |
| Keyword | particulate matter (PM), naturally ventilated laboratory, outdoor infiltration |
| Material Type | Thesis/Dissertation |
Preliminary Pages
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Category : F - Regular work, i.e., it has no patentable invention or creation, the author does not wish for personal publication, there is no confidential information.
Access Permission : Open Access