Browsing by Author "Norhayati Mohd. Tahir"
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Item Restricted Concentrations of PAHs in atmospheric particles (PM-10) and roadside soil particles collected in Kuala Lumpur, Malaysia(Elsevier, 2002) Nasr Yousef M.J. Omar; M. Radzi Bin Abas; Kamal Aziz Ketuly; Norhayati Mohd. TahirThe concentrations of polycyclic aromatic hydrocarbons (PAHs) in atmospheric particles and roadside soil particles were measured at eight locations in the city center and the suburb of Kuala Lumpur, Malaysia. Atmospheric particleswere collected using high-volume PM-10 sampler on glass fiber filters over 24 h average sampling period. Both types of samples were extracted with dichloromethane by ultrasonic agitation. The extracts were then fractionated on an alumina-silica column and the aromatic fraction was subjected to gas chromatography-mass spectrometric (GC-MS) analysis.Item Restricted Determination of total hydrocarbon concentration in coastal waters and sediments off the east coast of Peninsular Malaysia(Chapman & Hall, 1997) Norhayati Mohd. Tahir; A.R. Abdullah; S. ShanmugamTo determine the level of total hydrocarbon concentrations (THCs) along the eastern coastal regions of Peninsular Malaysia, samples of subsurface seawater (1 m) and surface sediments were collected from several sampling stations between June and August 1993.Item Metadata only Kajian Awal Pelakuan Parameter Fizikal dan Nutrien Fosfat di Muara Sungai Dungun, Terengganu(Penerbit UKM) Mohd. Shafaril Mohd. Amin; Norhayati Mohd. Tahir; Suhaimi SuratmanItem Metadata only Penilaian kesan antropogenik terhadap kualiti air di Tanah Bencah Setiu, Terengganu(Penerbit UKM) Norhayati Mohd. Tahir; Siti Rosnani Jusoh; Suhaimi Suratman