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UPSI Digital Repository (UDRep)
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| Abstract : Universiti Pendidikan Sultan Idris |
| This study aims to determine the compositions of surfactants extracted from urban particulate
matter (PM) and motor vehicle exhaust soot. A high volume air sampler (HVAS) has been used to
collect PM sample at Kuala Lumpur urban area. Meanwhile, the vehicle exhaust soot was collected
randomly from exhaust pipe of various types of diesel and petrol vehicles, using a soft brush during
dry days. The concentration of anionic surfactants as Methylene Blue Active Substances (MBAS)
was determined by the colorimetric method using UV-Vis Spectrophotometer. The presence of
microorganisms as bacteria and fungi was investigated by colony count. In addition, correlation
between surfactants and traffic related air pollutants, and meteorological factors were also been
investigated. Results revealed that the average concentration of PM was 107.68 ± 7.91 μgm-3 while
surfactants in PM was 105 ± 48.8 pmolm-3. Diesel vehicles demonstrated higher surfactant
concentration in exhaust soot with average value of 0.227 ± 0.006 μmolg-1 compared to petrol
vehicles (0.146 ± 0.003 μmolg-1). For bio aerosol, the average total bacterial count (TBC) and total
fungi count (TFC) from particulate matter are 225 cfum-3 and 250 cfum-3, respectively. Based on
this study, various mitigation procedures can be implemented to reduce the impacts of PM and
exhaust soot for a better future. |
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