Browsing by Author "Mohamad Pauzi Zakaria"

Now showing 1 - 17 of 17
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    Anthropogenic waste indicators (AWIs), particularly PAHs and LABs, in Malaysian sediments: Application of aquatic environment for identifying anthropogenic pollution
    (Elsevier, 2016) Najat Masood; Mohamad Pauzi Zakaria; Normala Halimoon; Ahmad Zaharin Aris; Sami M. Magam; Narayanan Kannan; Shuhaimi Mustafa; Masni Mohd Ali; Mehrzad Keshavarzifard; Vahab Vaezzadeh; Sadeq Abdullah Abdo Alkhadher; Najat Ahmed Al-Odaini
    Polycyclic aromatic hydrocarbons (PAHs) and linear alkylbenzenes (LABs) were used as anthropogenic markers of organic chemical pollution of sediments in the Selangor River, Peninsular Malaysia. This study was conducted on sediment samples from the beginning of the estuary to the upstream river during dry and rainy seasons.
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    Baseline distributions and sources of Polycyclic Aromatic Hydrocarbons (PAHs) in the surface sediments from the Prai and Malacca Rivers, Peninsular Malaysia
    (Elsevier, 2014) Mehrzad Keshavarzifard; Mohamad Pauzi Zakaria; Tan Shau Hwai; Ferdius@Ferdius Mohamat Yusuff; Shuhaimi Mustafa; Vahab Vaezzadeh; Sami M. Magam; Najat Masood; Sadeq A.A. Alkhadher; Fatemeh Abootalebi-Jahromi
    In this study, the surface sediments of the Malacca and Prai Rivers were analyzed to identify the distributions, and sources of Polycyclic Aromatic Hydrocarbons (PAHs).
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    Characterization, distribution, sources and origins of aliphatic hydrocarbons from surface sediment of Prai Strait, Penang, Malaysia: A widespread anthropogenic input
    (Thai Society of Higher Eduation Institutes on Environment, 2008) Mahyar Sakari; Mohamad Pauzi Zakaria; Nordin Hj Lajis; Che Abd Rahim Mohamed; Pourya Shahpoury Bahry; Sofia Anita; Kuhan Chandrug
    Persistent organic pollutants such as petroleum hydrocarbons are one of the most serious and important class of pollutants that face to many countries including Malaysia. Aliphatic hydrocarbons contain straight chain alkane; derive from anthropogenic and natural sources to the marine environment. The multi-purpose strait of Prai is located in the Northwest of Peninsular Malaysia plays an important economic role in the Southeast Asia. Twenty surface sediment samples were collected using Eckman dredge to measure the concentration and determine the characterization, sources and origins of the aliphatic hydrocarbons in December 2006. Samples (top 4 cm) were extracted with Soxhlet, treated with activated copper and subjected to 2 steps column chromatography for purification and fractionation. Alkane fraction injected into Gas Chromatography-Flame Ionization Detector (GC-FID) for instrumental analysis.
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    Composition and source identification of polycyclic aromatic hydrocarbons in mangrove sediments of Peninsular Malaysia: indication of anthropogenic input
    (Springer, 2013) Muhammad Raza; Mohamad Pauzi Zakaria; Nor Rasidah Hashim; Un Hyuk Yim; Narayanan Kannan; Sung Yong Ha
    This is a comprehensive study of the composition, origin and sources of specific polycyclic aromatic hydrocarbons (PAHs) in sediments of mangrove estuary in the western part of Peninsular Malaysia. Mangrove sediments were analyzed for 17 PAHs by gas chromatography-mass spectrometry.
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    Distribution of black carbon and PAHs in sediments of Peninsular Malaysia
    (Elsevier, 2021) Vahab Vaezzadeh; Xin Yi; Farah Rasyidah Rais; Chui Wei Bong; Margaret William Thomes; Choon Weng Lee; Mohamad Pauzi Zakaria; Ai Jun Wang; Guangcai Zhong; Gan Zhang
    Concentrations, sources and interactions between black carbon (BC) and polycyclic aromatic hydrocarbons (PAHs) were investigated in 42 sediment samples collected from riverine, coastal and shelf areas in Peninsular Malaysia.
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    Distribution of linear Alkylbenzenes (LABs) in sediments of Sarawak and Semnulan rivers, Malaysia
    (Thai Society of Higher Eduation Institutes on Environment, 2012) Sami Muhsen Magam; Mohamad Pauzi Zakaria; Normala Halimoon; Najat Masood; Murad Ali Alsalahi
    The current study is one of the first studies evaluating the levels of linear alkylbenzenes (LABs) in surface sediments of Sarawak and Sembulan rivers which are located in the east coast of Malaysia. The LABs, which are molecular tracers of sewage contamination, were measured in 15 surface sediment samples collected from these rivers. The samples were extracted, fractioned and analyzed by gas chromatography mass spectrometry (GC-MS).
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    Distributions and source apportionment of sediment-associated polycyclic aromatic hydrocarbons (PAHs) and hopanes in rivers and estuaries of Peninsular Malaysia
    (Springer, 2015) Mehrzad Keshavarzifard; Mohamad Pauzi Zakaria; Tan Shau Hwai; Ferdius Mohamat Yusuff; Shuhaimi Mustafa
    In this study, the distributions and sources of sediment-associated polycyclic aromatic hydrocarbons (PAHs) and hopanes in the Malaysian rivers and estuaries were evaluated.
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    Elemental hydrochemistry assessment on its variation and quality status in Langat River, Western Peninsular Malaysia
    (Springer, 2013) Wan Ying Lim; Ahmad Zaharin Aris; Tengku Hanidza Tengku Ismail; Mohamad Pauzi Zakaria
    This paper discusses the hydrochemistry variation and its quality status in Langat River, based on the chemistry of major ions, metal concentrations and suitability for drinking purposes. Water samples were collected from 30 different stations to assess their hydrochemical characteristics.
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    Examination of barnacles potential to be used as bioindicators of persistent organic pollutants in coastal ecosystem: A Malaysia case study
    (Elsevier, 2021) Vahab Vaezzadeh; Margaret William Thomes; Tatsuya Kunisue; Nguyen Minh Tue; Gan Zhang; Mohamad Pauzi Zakaria; Yang Amri Affendi; Fook Choy Yap; Li Lee Chew; Hong Wooi Teoh; Choon Weng Lee; Chui Wei Bong
    This is the first study attempting to assess the suitability of barnacles as bioindicators of persistent organic pollutants (POPs) in coastal environments. Barnacles were collected from the coasts around Peninsular Malaysia and analyzed for POPs including polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs) and organochlorine pesticides (OCPs).
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    Groundwater and surface-water utilisation using a bank infiltration technique in Malaysia
    (Springer, 2014) Mohd Khairul Nizar Shamsuddin; Wan Nor Azmin Sulaiman; Saim Suratman; Mohamad Pauzi Zakaria; Kamarudin Samuding
    Bank infiltration (BI) is one of the solutions to providing raw water for public supply in tropical countries. This study in Malaysia explores the use of BI to supplement a polluted surface-water resource with groundwater. Three major factors were investigated: (1) contribution of surface water through BI to the resulting abstraction, (2) input of local groundwater, and (3) water-quality characteristics of the resulting water supply.
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    Lateral distribution, environmental occurrence and assessment of organic pollutants in surface sediments of the west and south Peninsular Malaysia
    (Springer, 2023) Sadeq Abdullah Abdo Alkhadher; Suhaimi Suratman; Mohamad Pauzi Zakaria
    Surface sediment samples had collected from the west and south of Peninsular Malaysia to determine the LAB content and distribution. The samples were analyzed, and their sources were determined using gas chromatography-mass spectrometry (GC-MS). The statistical significance of the variations among sampling stations was examined using the analysis of variance (ANOVA) and Pearson correlation coefficient at p < 0.01. The degrees of LAB degradation and the effectiveness of sewage treatment were assessed using long to short chains L/S, homologs C13/C12, and internal to external (I/E) indices.
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    Linear alkylbenzenes in surface sediments of an estuarine and marine environment in peninsular Malaysia
    (Elsevier, 2020) Sadeq Abdullah Abdo Alkhadher; Aeslina Abdul Kadir; Mohamad Pauzi Zakaria; Adel Al-Gheethi; Mehrzad Keshavarzifard; Najat Masood; Khalaf Muslam Alenezi; Sami Muhsen Magame
    Linear alkylbenzenes were determined in the surface sediments of Muar River and Pulau Merambong, Peninsular Malaysia.
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    Monitoring of linear alkyl benzenes (LABs) in riverine and estuarine sediments in Malaysia
    (Springer, 2021) Najat Masood; Sadeq A. A. Alkhadher; Sami M. Magam; Normala Halimoon; Abdulmohsen Alsukaibi; Mohamad Pauzi Zakaria; Vahab Vaezzadeh; Mehrzad Keshavarzifard; Sawsan Maisara; Mohammed Khaled Bin Break
    The aim of this a pioneering research is to investigate linear alkylbenzenes (LABs) as biomarkers of sewage pollution in sediments collected from four rivers and estuaries of the south and east of Peninsular Malaysia. The sediment samples went through soxhlet extraction, two-step column chromatography purification, fractionation and gas chromatography–mass spectrometry (GC–MS) analysis.
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    Polycyclic aromatic hydrocarbons and n-alkanes in suspended particulate matter and sediments from the Langat river, Peninsular Malaysia
    (Thai Society of Higher Education Institutes on Environment, 2009) Alireza Riyahi Bakthiari; Mohamad Pauzi Zakaria; Mohammad Ismail Yaziz; Mohamad Nordin Hj Lajis; X. Bi
    The Langat River basin has seen rapid developments in industrialization, urbanization and dramatic population increases during the past two decades. The composition and sources of polycyclic aromatic hydrocarbons (PAHs) and aliphatic hydrocarbon (n-alkanes) concentrations were determined in surface sediments (SS) and suspended particulate matter (SPM) collected from six locations in the Langat River.
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    Seasonal variability of anthropogenic indices of PAHs in sediment from the Kuala Selangor River, west coast Peninsular Malaysia
    (Springer, 2018) Najat Masood; Normala Halimoon; Ahmad Zaharin Aris; Mohamad Pauzi Zakaria; Vahab Vaezzadeh; Sami M. Magam; Shuhaimi Mustafa; Masni Mohd Ali; Mehrzad Keshavarzifard; Sadeq Abdullah Abdo Alkhadher; Chui Wei Bong; Murad Ali Alsalahi
    Rapid increase in industrialization and urbanization in the west coast of Peninsular Malaysia has led to the intense release of petroleum and products of petroleum into the environment. Surface sediment samples were collected from the Selangor River in the west coast of Peninsular Malaysia during four climatic seasons and analyzed for PAHs and biomarkers (hopanes).
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    Taburan Sterol dalam Sedimen di Sungai Sepang Besar, Selangor
    (Penerbit UKM) Aminah Mag Piah; Masni Mohd. Ali; Mohamad Pauzi Zakaria
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    The history of petroleum pollution in Malaysia; urgent need for integrated prevention approach
    (Thai Society of Higher Education Institutes on Environment, 2010) Mahyar Sakari; Mohamad Pauzi Zakaria; Che Abd Rahim Mohamed; Nordin Haji Lajis; Kuhan Chandru; Pourya Shahpoury Bahry; Mohammadreza Mohammad Shafiee; Sofia Anita
    Petroleum pollution is known as point and non-point source of contaminations in the environment. A major class of petroleum contaminant is groups of compounds consist of two or more fused benzene rings called polycyclic aromatic hydrocarbons (PAHs) that are carcinogenic, mutagenic and toxic. Source identification of petroleum pollution is necessary to prevent pollution entry into the environment. Eight sedimentary cores were obtained from developed and developing areas around Peninsular Malaysia to investigate the historical profile of PAHs, their characteristics and its possible origins.