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Indoor and Outdoor Fine Particulate Matter (PM2.5) of Daycare in Kuala
Nerus
Norkhoirina Binti Hairuddin
Supervisor: Dr. Noorlin Binti Mohamad
Co Supervisor: Dr. Suvik A/L Assaw
Bachelor of Technology (Environment)
School of Ocean Engineering
Universiti Malaysia Terengganu
This study aims to determine the composition and sources of particulate matter with
aerodynamic diameter of 2.5 or less (PM2.5) at a day care in Kuala Nerus. PM2.5
samples were collected using low volume sampler (LVS) at indoor and outdoor of a
day care from January to April 2018. PM2.5 samples were analysed using Inductively
Coupled Plasma-Optical Emission Spectrometry (ICP-OES), while gram stain test was
carried out to determine the microbial contaminants. The results show that the
concentration range of the indoor and outdoor PM2.5 varied from 7.55 to 23.98 µg/m 3
and from 7.03 to 21.88 µg/m 3 . The metals found were dominated by Fe and followed
by Zn, Al, Ba, Cr, Pb and Mn. The fact that Co had the highest enrichment factor (EF),
indicates that anthropogenic activities contributed to the presence of this metal in
PM2.5. Meanwhile, the bacteria were dominated by Gram positive bacteria.
60 | U M T U N D E R G R A D U A T E R E S E A R C H D A Y 2019