Quantification of heavy metals in bivalves along Northwest Coast of Sabah

Noor Diani Bambang Dwi Harsono, (2016) Quantification of heavy metals in bivalves along Northwest Coast of Sabah. Universiti Malaysia Sabah. (Unpublished)

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Abstract

"Level of heavy metals in marine environment has been intensively studied in recent years as these hazardous substances are very harmful to the organisms and the environment. Generally, heavy metals contaminants in marine environment resulted from anthropogenic discharges that contain harmful substances which flow Into the marine ecosystem. In this study, the marine bivalve marsh clams (Polymesoda expansa) and green mussels (Pema viridis) were collected along the Northwest coast of Sabah particularly in Kota Marudu (Marudu Bay), Kota Belud (Ambong Bay), Tuaran (Salut and Mengkabong rivers) and Sepanggar (Sepanggar Bay) and analyzed for heavy metal elements (As, Cr, Cu, Mn, Ni, Pb and Zn). The study was carried out to measure the concentration of heavy metals in different districts along the coast of Sabah and to compare the concentration of heavy metals in the two bivalves. Bivalves are widely used In many countries as bio-indicator to bio-monitor the contaminants in the marine environment as it can accumulate pollutant such as heavy metals. Bivalves are also very sensitive to contaminants and show good responses to environmental changes. From this study, the highest mean concentration of heavy metals recorded was Zn in marsh dams and green mussels from Tuaran and Sepanggar at 535.849 (JJQ/ g) and 374.366 (g), respectively which was exceeded the permissible limit set by Malaysian Regulation (1985) and FAO/WHO (1984) but below the limit set by other countries such as Thailand and Australia. However, when compare with Tolerable upper intake level (TUI) set by Food and Nutrition Board (2001) Zn concentration in marsh dams and green mussels from Tuaran and Sepanggar are safe for human consumption with little precaution. The statistical analysis of Pearson's correlation showed that, the bivalves with longer length and heavier in weight have the tendency to accumulate higher amount of heavy metals.

Item Type:Academic Exercise
Uncontrolled Keywords:marine environment, organisms, marine bivalve marsh clams
Subjects:Q Science > QD Chemistry
Divisions:FACULTY > Faculty of Science and Natural Resources
ID Code:17450
Deposited By:Noraini L
Deposited On:05 Jul 2017 09:58
Last Modified:11 Jul 2017 07:41

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