Abstract
The aim of this study was to measure the level of indoor air pollutants (carbon dioxide [CO2], formaldehyde [HCHO], volatile organic compound [VOC)], and bacteria and fungi) in Water and Wastewater Engineering Laboratory (WWEL) (station 1) and Material Engineering Laboratory (MEL) (station 2) in a university building every 60 min. Measurements were taken over an 8-h period each day for 3 days. The results showed that the total volatile organic compounds (TVOCs) and respirable particulates exceeded the acceptable limits for indoor air quality (IAQ) set by the Department of Occupational Safety and Health (DOSH) in both locations. The concentration of formaldehyde measured at station 2 also exceeded the acceptable limit. Bacteria found in both laboratories were identified as gram-positive bacteria; the most dominant microbes were from Bacillus sp. A good ventilation system and a careful selection of construction materials are crucial to reduce IAQ contamination.
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