Browsing by Author "Helmiah Abdul Razak"

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    Anionic surfactants and traffic related emission from an urban area of Perak, Malaysia
    (Springer, 2019) Helmiah Abdul Razak; Nurul Bahiyah Abd Wahid; Mohd Talib Latif
    Anionic surfactants are one of the pollutants derived from particulate matter (PM) and adversely affect the health of living organisms. In this study, the compositions of surfactants extracted from PM and vehicle soot collected in an urban area were investigated. A high-volume air sampler was used to collect PM sample at urban area based on coarse (> 1.5 µm) and fine (< 1.5 µm) mode particles. Meanwhile, the vehicle soot was collected randomly from the exhaust pipe of various types of diesel and petrol vehicles using a soft brush during dry days. The concentration of anionic surfactants, such as Methylene Blue Active Substances (MBAS), was determined by the colorimetric method using UV–Vis Spectrophotometer. Morphological properties of the PM and exhaust soot sample was studied using feld-emission scanning electron microscope.