Concentrations of Cu and Pb in the offshore and intertidal sediments of the west coast of Peninsular Malaysia

Yap, Chee Kong; Ismail, Ahmad; Tan, Soon Guan; Omar, Hishamuddin

doi:10.1016/s0160-4120(02)00073-9

Cited by 88 publications

(64 citation statements)

References 46 publications

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“…On the contrary, the clustering of heavy metals based on metal pollution level on the sites where the first consisted of sites that showing minimal pollution sources while the second cluster consisted of some of the most polluted sites in Malaysia [12]. This suggested that the genetic polymorphisms of the snails are more likely influenced by geographical and environmental factors other than bioaccumulation of metals by the snails.…”

Section: Resultsmentioning

confidence: 95%

Relationship between trace metal pollution and genetic polymorphisms in the biomonitor Nerita lineata from Peninsular Malaysia

Wan¹,

Ling²,

Chee³

2017

Seventh International Conference on Advances in Applied Science and Environmental Engineering - ASEE 2017

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Abstract-Genetic markers have long been identified as diagnostic tools to monitor marine pollution, as marine organisms exhibit genetic polymorphisms as adaptation and response towards environmental contaminants. This study aimed to determine the relationship between the heavy metal levels and the genetic polymorphisms of N. lineata, which were collected from six different mangrove areas in Peninsular Malaysia. Inter-Simple Sequence Repeat (ISSR) markers were applied for genetic polymorphism study in the snails while heavy metal analysis was carried out by using the atomic absorption spectrophotometer (AAS) for Cd, Cu, Fe, Ni, Pb and Zn. The results showed that the clustering of genetic polymorphism was based on geographical influences while clustering of heavy metal levels was based on bioaccumulation of the metals by the snails. However, there were no relationship between clustering patterns of the genetic polymorphism and heavy metal levels of the snails. This indicated that the population genetic diversity of N. lineata is not a suitable biomarker for heavy metal.

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Section: Resultsmentioning

confidence: 95%

Relationship between trace metal pollution and genetic polymorphisms in the biomonitor Nerita lineata from Peninsular Malaysia

Wan¹,

Ling²,

Chee³

2017

Seventh International Conference on Advances in Applied Science and Environmental Engineering - ASEE 2017

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“…This finding is still comparable to previous studies on the west coast of Peninsular Malaysia which found 3-17% of the total fraction and 10-30% in Chile. [7,28] Less than 20% of the metals in the sediment were in the acid-reducible fraction, and therefore, as mentioned by Yap et al [27] Table 5, Bandar Torkman found the highest concentrations of oxidisable-organic for Ni and Cu (8.19 ± 0.17 and 7.45 ± 0.32 μg/g dw, respectively). The highest concentrations for the oxidisable-organic fraction of Cd (0.55 ± 0.02) and Zn (6.45 ± 0.19) were found in the western Caspian Sea in the Astara area.…”

Section: Speciation Of Heavy Metals In Surface Sedimentsmentioning

confidence: 87%

“…These metals, originating from non-anthropogenic inputs, were considered to be trapped within silicate minerals, and incorporated into the crystalline lattice positions of minerals. [18,27] Comparison of non-resistant and resistant fraction between stations…”

Section: Speciation Of Heavy Metals In Surface Sedimentsmentioning

confidence: 99%

Distribution and contamination pattern of heavy metals from surface sediments in the southern part of Caspian Sea, Iran

Naji

Sohrabi²

2015

Chemical Speciation & Bioavailability

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This study concentrates on the speciation and distribution patterns of some heavy metals (Pb, Ni, Cd, Zn, and Cu) in surface sediments in the southern part of the Caspian Sea, the biggest lake in the world, to obtain an overall classification for the origins of metals in the area using a sequential extraction technique. At all sampling stations, Pb, Ni, Zn, and Cu were mostly (>50%) accumulated in the resistant fraction, which indicated that there were no significant anthropogenic inputs of Pb, Ni, Zn, and Cu into the surface sediments of the south Caspian Sea. Guilan province on the west coast of Caspian Sea accumulated higher percentages of non-resistant fractions of Pb and Zn, while Mazandaran and Golestan provinces in the middle and western parts of the Caspian Sea, in the Iranian zone, accumulated higher percentages of non-resistant fractions of Ni and Cu. The present study revealed that the coastal area of the south Caspian Sea is still not seriously contaminated. Cadmium in Guilan and Golestan provinces were dominated by non-resistant fractions (55-69%), which indicated more anthropogenic inputs of Cd on the south coast of the Caspian Sea in comparison with other metals.

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“…After collection the samples were placed in plastic containers and kept at 4 o C until analysis (Azrina et al, 2006). The sediment samples were digested and the analyses for total Pb and Cu carried out following published methodologies with some modifications (Gupta and Bertrand, 1995;Yap et al, 2002;Defew et al, 2005). An inductively coupled plasma mass spectrometer (Perkin Elmer Elan 6000 ICP-MS) was used for the quick and precise determination of Co, Cu, Pb and Zn in the digested sediment.…”

Section: Methodsmentioning

confidence: 99%

Heavy Metals Concentration in Surficial Sediments of Bidong Island, South China Sea off the East Coast of Peninsular Malaysia

Ong¹,

Joseph²,

Shazili³

et al. 2015

Asian J. of Earth Sciences

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The distribution, enrichment and accumulation of heavy metals in the surficial sediments of Bidong Island, South China Sea East Coast of peninsular Malaysia were investigated. dry weight), respectively. All metals studied have relatively low Enrichment Factor (EF) values and index of geo-accumulation (I geo ) in the study area. Overall, the geochemistry of the sediment of Bidong Island was influenced by both natural and anthropogenic inputs to the catchment. However, direct comparison with earth crust values and normalization to Al indicated that natural processes were more dominant than anthropogenic inputs in concentrating metals.Key words: Enrichment, accumulation, enrichment factor, index of geoaccumulation, anthropogenic INTRODUCTIONPollution by heavy metals in natural environments has become a global problem (Irabien and Velasco, 1999). It has been recognized for many years that the concentrations of metals found in coastal areas, whether they are in the dissolved or particulate phase may be derived from a variety of anthropogenic and natural sources (Burridge et al., 1999). Heavy metals are of considerable environmental concern due to their toxicity, wide range of sources, nonbiodegradable properties and accumulative behaviors. With the rapid industrialization and economic development in coastal regions, heavy metals are continuing to be introduced to estuarine and coastal environment through rivers, runoff and land-based point sources where metals are produced as a result of metal refinishing by-products. In most circumstances, the major part of the anthropogenic metal load in the sea and sea bed sediments and organisms has a terrestrial source from mining and intensive aquaculture and municipal wastewaters, untreated effluents, harbor activities, urban and agricultural runoff along major rivers and estuaries and bays (Dalman et al., 2006).When metals enter the marine environment, most of them will settle down and be incorporated into sediments together with organic matter, Fe/Mn oxides, sulfides and clay (Wang and Chen, 2000). Marine sediments act as scavengers for trace metals and often provide an excellent proof of

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Concentrations of Cu and Pb in the offshore and intertidal sediments of the west coast of Peninsular Malaysia

Cited by 88 publications

References 46 publications

Relationship between trace metal pollution and genetic polymorphisms in the biomonitor Nerita lineata from Peninsular Malaysia

Relationship between trace metal pollution and genetic polymorphisms in the biomonitor Nerita lineata from Peninsular Malaysia

Distribution and contamination pattern of heavy metals from surface sediments in the southern part of Caspian Sea, Iran

Heavy Metals Concentration in Surficial Sediments of Bidong Island, South China Sea off the East Coast of Peninsular Malaysia

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