Pollution

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  • ItemOpen Access
    Assessment of Heavy Metal Contamination in Paddy Field Soils: A Case Study in Ranau Valley, Sabah, Malaysia
    (E3S Web of Ccnference, 2025-01-10) Siti Norliyana; Nadrah Ahmad Damanhuri
    The weathering of ultrabasic rocks surrounding the Ranau Valley in Sabah, Malaysia, contributes to the formation of soils with elevated concentrations of heavy metals. These metals, including Manganese (Mn), Nickel (Ni), Chromium (Cr), and others, have the potential to disperse into nearby paddy fields, leading to significant soil contamination. This study aims to: (a) determine the concentrations of heavy metals in the paddy field soils of Ranau Valley and (b) map their spatial distribution using Geographic Information System (GIS) technology. The results revealed that Mn was the most abundant metal, with concentrations reaching 13,855.67 mg/kg, followed by Iron (Fe), Ni, Zinc (Zn), and Cr. Several metals, including Mn, Ni, and Cr, exceeded established soil toxicity thresholds, particularly in areas influenced by ultrabasic rocks and agricultural practices. Elevated levels of Copper (Cu), Lead (Pb), Zn, and Cadmium (Cd) were also observed in regions affected by the use of chemical fertilizers. These findings highlight the potential risks to agricultural productivity and food safety in the region, as metals such as cadmium and lead can accumulate in crops, posing health risks to local populations. To address these concerns, remediation strategies such as organic amendments and pH adjustments are recommended. Regular monitoring and sustainable soil management practices will be essential to safeguard soil health, ensure food security, and reduce environmental risks in the Ranau Valley.
  • ItemEmbargo
    Geo-accumulation index and contamination factors of heavy metals (Zn and Pb) in urban river sediment
    (Springer, 2017) Hazzeman Haris; Ley Juen Looi; Ahmad Zaharin Aris; Nor Farhanna Mokhtar; Nur Ain Ayunie Ayob; Fatimah Md. Yusoff; Abu Bakar Salleh; Sarva Mangala Praveena
    The aim of the present study was to appraise the levels of heavy metal contamination (Zn and Pb) in sediment of the Langat River (Selangor, Malaysia). Samples were collected randomly from 15 sampling stations located along the Langat River. The parameters measured were pH, redox potential, salinity, electrical conductivity, loss of ignition, cation exchanges capacity (Na, Mg, Ca, K), and metal ions (Zn and Pb).
  • ItemEmbargo
    Assessment of heavy metal pollution in surficial sediments from a tropical river-estuary-shelf system: A case study of Kelantan River, Malaysia
    (Elsevier, 2017) Ai-jun Wang; Chui Wei Bong,Yong-hang Xu; Meor Hakif Amir Hassan; Xiang Ye; Ahmad Farid Abu Bakar; Yun-hai Li; Zhi-kun Lai; Jiang Xu; Kar Hoe Loh
    To understand the source-to-sink of pollutants in the Kelantan River estuary and the adjacent shelf area in Malaysia, a total of 42 surface sediment samples were collected in the Kelantan River-estuary-shelf system to analyze for grain size, total organic carbon (TOC) content, Al and heavy metals (Cr, Ni, Cu, Zn, Cd and Pb).
  • ItemEmbargo
    Assessment of heavy metal pollution in surface sediments of the Bayan Lepas area, Penang, Malaysia
    (Elsevier, 2017) Sharareh Khodami; Misni Surif; Wan Maznah W.O.; Reza Daryanabard
    This study aimed to evaluate the spatial and temporal distribution of heavy metals (Cd, Cr, Cu, Co, Fe, Pb, Ni, V, and Zn) in the sediments of Bayan Lepas Free Industrial Zone of Penang, Malaysia. Ten sampling stations were selected and sediment samples were collected during low tide (2012 ? 2013). Metals were analyzed and the spatial distribution of metals were evaluated based on GIS mapping.
  • ItemEmbargo
    Environmental geochemistry of the abandoned Mamut Copper Mine (Sabah) Malaysia
    (Springer, 2018) Antony van der Ent; Mansour Edraki
    This article presents a preliminary geochemical investigation of waste rocks, sediments, secondary precipitates, surface water chemistry and foliar elemental uptake in ferns, and discusses these results in light of their environmental significance for rehabilitation.
  • ItemEmbargo
    Evaluation and assessment of baseline metal contamination in surface sediments from the Bernam River, Malaysia
    (Springer, 2016) Safaa A. Kadhum; Mohd Yusoff Ishak; Syaizwan Zahmir Zulkifli
    The Bernam River is one of the most important rivers in Malaysia in that it provides water for industries and agriculture located along its banks. The present study was conducted to assess the level of contamination of heavy metals (Cd, Ni, Cr, Sn, and Fe) in surface sediments in the Bernam River. Nine surface sediment samples were collected from the lower, middle, and upper courses of the river.
  • ItemEmbargo
    Estimation and influence of physicochemical properties and chemical fractions of surface sediment on the bioaccessibility of Cd and Hg contaminant in Langat River, Malaysia
    (Springer, 2017) Safaa A. Kadhum; Mohd Yusoff Ishak; Syaizwan Zahmir Zulkifli
    This study applied the use of sequential extraction technique and simple bioaccessibility extraction test to quantify the bioavailable fractions and the human bioaccessible concentration of metals collected from nine stations in surface sediment of the Langat River.
  • ItemEmbargo
    Evaluation of the status and distributions of heavy metal pollution in surface sediments of the Langat River Basin in Selangor Malaysia
    (Elsevier, 2015) Safaa A. Kadhum; Mohd Yusoff Ishak; Syaizwan Zahmir Zulkifli; Rohasliney binti Hashim
    The concentration of four metals: Cd, Ni, Cr, and Sn, in the surface sediment samples from the Langat River were evaluated. Multivariate techniques were used to apportion the sources of the metals.
  • ItemEmbargo
    Geofractionation of heavy metals and application of indices for pollution prediction in paddy field soil of Tumpat, Malaysia
    (Springer, 2013) Ai Yin Sow; Ahmad Ismail; Syaizwan Zahmir Zulkifli
    The present study investigates the concentration of Pb, Cd, Ni, Zn, and Cu in the paddy field soils collected from Tumpat, Kelantan. Soil samples were treated with sequential extraction to distinguish the anthropogenic and lithogenic origin of Pb, Cd, Ni, Zn, and Cu. ELFE and oxidizable-organic fractions were detected as the lowest accumulation of Pb, Cd, Ni, Zn, and Cu. Therefore, all the heavy metals examined were concentrated, particularly in resistant fraction, indicating that those heavy metals occurred and accumulated in an unavailable form.
  • ItemEmbargo
    Metal concentrations in sediments from tourist beaches of Miri City, Sarawak, Malaysia (Borneo Island)
    (Elsevier, 2013) R. Nagarajan; M.P. Jonathan; Priyadarsi D. Roy; L. Wai-Hwa; M.V. Prasanna; S.K. Sarkar; M. Navarrete-López
    Forty-three sediment samples were collected from the beaches of Miri City, Sarawak, Malaysia to identify the enrichment of partially leached trace metals (PLTMs) from six different tourist beaches. The samples were analyzed for PLTMs Fe, Mn, Cr, Co, Cu, Ni, Pb, Sr and Zn.
  • ItemEmbargo
    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).
  • ItemEmbargo
    Evaluation of radionuclides transfer from soil-to-edible flora and estimation of radiological dose to the Malaysian populace
    (Elsevier, 2016) Mayeen Uddin Khandaker; Noor Liyana Mohd Nasir; Kh Asaduzzaman; Michael Adekunle Olatunji; Yusoff Mohd Amin; Hasan Abu Kassim; D.A. Bradley; P.J. Jojo; Tareq Alrefae
    Malaysia, a rapidly growing industrial country, is susceptible to pollution via large-scale industrial engagements and associated human activities. One particular concern is the potential impact upon the quality of locally resourced vegetables, foodstuffs that contain important nutrients necessary for good health, forming an essential part of the Malaysian diet. As a part of this, it is of importance for there to be accurate knowledge of radioactive material uptake in these vegetables, not least in respect of any public health detriment.
  • ItemEmbargo
    Distribution and source apportionment of polycyclic aromatic hydrocarbons (PAHs) in surface soils from five different locations in Klang Valley, Malaysia
    (Springer, 2012) Ee Von Lau; Suyin Gan; Hoon Kiat Ng
    The concentrations of polycyclic aromatic hydrocarbons (PAHs) in soil samples were measured at five different sites within Klang Valley, Malaysia.
  • ItemEmbargo
    Johor Strait as a hotspot for trace elements contamination in Peninsular Malaysia
    (Springer, 2010) Syaizwan Zahmir Zulkifli; Ahmad Ismail; Ferdaus Mohamat-Yusuff; Takaomi Arai; Nobuyuki Miyazaki
    Present study was conducted to evaluate current status of trace elements contamination in the surface sediments of the Johor Strait.
  • ItemEmbargo
    Contamination profiles of antifouling biocides in selected coastal regions of Malaysia
    (Springer, 2009) Hiroya Harino; Takaomi Arai; Madoka Ohji; Ahmad Bin Ismail; Nobuyuki Miyazaki
    The concentrations of butyltins (BTs) in sediment from Peninsular Malaysia along the Strait of Malacca and their spatial distribution are discussed.
  • ItemEmbargo
    Heavy metals from agricultural soils from Cameron Highlands, Pahang, and Cheras, Kuala Lumpur, Malaysia
    (Springer, 2006) J. Khairiah; K. H. Lim; R. Ahmad-Mahir; B. S. Ismail
    The objective of this study was to determine the speciation of heavy metals in Malaysian agricultural soils from the Cameron Highlands in Pahang and from Cheras in Kuala Lumpur.
  • ItemEmbargo
    Leaching potential of pesticides in a vegetable farm in the Cameron Highlands, Malaysia
    (Springer, 2004) B. S. Ismail; C. K. Ngan; U. B. Cheah; W. Y. Wah Abdullah
    This study was conducted to examine the leaching potential of chlorothalonil, chlorpyrifos and profenofos in the vegetable agroecosystem of the Cameron Highlands, Malaysia.
  • ItemEmbargo
    Heavy metals in soils and crops in Southeast Asia
    (Springer, 2004) Bernhard A. Zarcinas; Che Fauziah Ishak; Mike J. McLaughlin; Gill Cozens
    In a reconnaissance soil geochemical and plant survey undertaken to study the heavy metal uptake by major food crops in Malaysia, 241 soils were analysed for cation exchange capacity (CEC), organic carbon (C), pH, electrical conductivity (EC) and available phosphorus (P) using appropriate procedures. These soils were also analysed for arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), mercury (Hg), nickel (Ni), lead (Pb) and zinc (Zn) using aqua regia digestion, together with 180 plant samples using nitric acid digestion.
  • ItemEmbargo
    Trace metals in sediments and potential availability to Anadara granosa
    (Springer, 1994) I. Mat; M. J. Maah; A. Johari
    Trace metals in the sediments non-residual fraction and their relative abundance in various sedimentary components from the culture bed of Anadara granosa were investigated.
  • ItemEmbargo
    Heavy metal concentrations in sediments off Bintulu, Malaysia
    (Pergamon Press Ltd, 1993) Ahmad Ismail
    The present work thus provides a baseline against which the contamination from future developments in the Bintulu Port area may be assessed.