Browsing by Author "Muhammad Ikram A. Wahab"

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    Airborne particles in the city center of Kuala Lumpur: Origin, potential driving factors, and deposition flux in human respiratory airways
    (Elsevier, 2019) Md Firoz Khan; Ahmad Hazuwan Hamid; Md Aynul Bari; Abdul Basit Ahmad Tajudin; Mohd Talib Latif; Mohd Shahrul Mohd Nadzir; Mazrura Sahani; Muhammad Ikram A. Wahab; Yusri Yusup; Khairul Nizam Abdul Maulud; Mohd Famey Yusoff; Nowshad Amin; Md Akhtaruzzaman; Warren Kindzierski; Prashant Kumar
    Equatorial warming conditions in urban areas can influence the particle number concentrations (PNCs), but studies assessing such factors are limited. The aim of this study was to evaluate the level of size-resolved PNCs, their potential deposition rate in the human respiratory system, and probable local and transboundary inputs of PNCs in Kuala Lumpur.
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    Characteristics and health effect of heavy metals on non-exhaust road dusts in Kuala Lumpur
    (Elsevier, 2020) Muhammad Ikram A. Wahab; Wan Mohd Amirfaqry Abd Razak; Mazrura Sahani; Md Firoz Khan
    This study aimed to assess the concentrations and health effect of trace metals [cadmium (Cd), chromium (Cr), copper (Cu), lead (Pb), nickel (Ni), and zinc (Zn)] on the road dust of selected locations in the city of Kuala Lumpur. Sampling was conducted thrice at four locations, namely, Tun Razak Road, Raja Abdullah Road, Tunku Abdul Rahman (TAR) Road, and Ayer Molek Road. The concentrations of trace metals in road dust were analyzed by inductively coupled plasma mass spectrometry.
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    Seasonal variation and size distribution of inorganic and carbonaceous components, source identification of size-fractioned urban air particles in Kuala Lumpur, Malaysia
    (Elsevier, 2022) Anas Ahmad Jamhari; Mohd Talib Latif; Muhammad Ikram A. Wahab; Hanashriah Hassan; Murnira Othman; Haris Hafizal Abd Hamid; Perapong Tekasakul; Worradorn Phairuang; Mitsuhiko Hata; Masami Furuchi; Nor Fadilah Rajab
    This study aims to determine the inorganic and carbonaceous components depending on the seasonal variation and size distribution of urban air particles in Kuala Lumpur. Different fractions of particulate matter (PM) were measured using a Nanosampler from 17 February 2017 until 27 November 2017. The water-soluble inorganic ions (WSIIs) and carbonaceous components in all samples were analysed using ion chromatography and carbon analyser thermal/optical reflectance, respectively.