Study of pm2.5 concentration at school near road side in penang
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Date
2018-06
Authors
Nur Amanina Ramli
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Abstract
The monitoring program monitored the relationship of indoor and outdoor
concentrations of the fine particles (PM2.5). Four schools were selected in this study.
The concentration of fine particulate matter was monitored at different classes with
different floor level. PM2.5 concentrations were monitored in close proximity to a road
side in order to determine whether traffic affect indoor concentration of PM2.5 at this
location. Other existing possible sources around the monitoring location were also
considered. PM2.5 concentrations were collected at Sekolah Kebangsaan Bayan Lepas,
Sekolah Kebangsaan Tasek Gelugor, Sekolah Menengah Kebangsaan Mutiara Impian
and Sekolah Kebangsaan Machang Bubok. The monitoring program was launched on
January 16, 2018 and continued until March 13, 2018. The monitoring data at different
floor level was taken intermittently with 15 minutes interval . E-sampler was positioned
at the back of the classroom and E-bam was positioned at outside of the school near to
the roadway. Meteorological information was collected using two instruments and
traffic information was continuously collected via video camera at or near the
monitoring site facing to the road. The data recorded using the specification monitor
were analyzed using SPSS software to determine the relationship of the PM2.5 indoors
and outdoors and its differences of the concentration at different floor level. The
indoor/outdoor (I/O) ratio analysis were 0.74 and 0.76 at second floor level and third
floor level of Sekolah Kebangsaan Bayan Lepas which shows the contribution from the
outdoor sources toward the indoor concentration of PM2.5. In contrast, the other three
schools show vice versa. Based on the apportionment analysis, the contribution of
roadway sources are not really strong based on the result analysed using Pearson
Correlation.