Browsing by Author "Hamidah Suradi"

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    Coastal meteorology on the dispersion of air particles at the Bachok GAW Station
    (Elsevier, 2021) Haasyimah Ab. Rahim; Md Firoz Khan; Zul Fadhli Ibrahim; Asadullah Shoaib; Hamidah Suradi; Noraini Mohyeddin; Azizan A. Samah; Sumiani Yusoff
    Meteorology over coastal region is a driving factor to the concentration of air particles and reactive gases. This study aims to conduct a research to determine the level of year-round air particles and the interaction of the meteorological driving factors with the particle number and mass in 2018, which is moderately influenced by Southeast Asian haze. We obtained the measurement data for particle number count (PNC), mass, reactive gases, and meteorological factors from a Global Atmospheric Watch (GAW) station located at Bachok Marine Research Center, Bachok, Kelantan, Malaysia.
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    The presence of polycyclic aromatic hydrocarbons (PAHs) in air particles and estimation of the respiratory deposition flux
    (Elsevier, 2023) Nur Ain Nazirah Binti Najurudeen; Md Firoz Khan; Hamidah Suradi; Ummay Ayesha Mim; Israt Nur Janntul Raim; Sara Binte Rashid; Mohd Talib Latif; Muhammad Nurul Huda
    Polycyclic aromatic hydrocarbons (PAHs) in the atmospheric particles constitute a topic of growing health concern. This study aims to calculate PAH concentrations, identify the source, assess the health risk from exposure to carcinogenic PAHs, and the respiratory deposition flux. PM10 and PM2.5 were collected in September 2019 in the urban, semi-urban, and semi-urban-industrial areas of Kuala Lumpur, Batu Pahat, and Bukit Rambai, respectively. A total of 18 PAHs from PM10 and 17 PAHs from PM2.5 were extracted using dichloromethane and determined using gas chromatography coupled with a flame ionization detector (GC-FID). The health risk assessment (HRA) calculated included B[a]P equivalent (B[a]Peq), lifetime lung cancer risk (LLCR), incremental lifetime cancer risk (ILCR), and respiratory deposition dose (RDD).