Heavy Metals Pollution and Ecological Risk Assessment in Surface Sediments of West Coast of Peninsular Malaysia
International Journal of Environmental Science and Development
In this study, Surface sediments from six sampling sites in the west coast of Peninsular Malaysia were analysed for heavy metals (Cu, Zn, Pb, Cd and Ni) to evaluate the pollution status and ecological risk assessment. Sediment samples were collected in triplicates from six sampling sites in the study area. Direct aquaregia method was employed to analyse the total metal concentrations in the sediment samples. The filtrates obtained from the sediments, were determined for heavy metals by using an
... metals by using an air -air acetylene flame atomic absorption spectrophotometer (AAS) Perkin Elmer Analyst 800. The results showed that Zn and Cd reveal considerable contamination, and almost all the sampling sites were of moderate degree of contamination. The calculated; Potential Ecological Risk Index (RI) ranged from low to moderate, the Sediment Quality Guideline Quotient (SQG-Q), for all the sampling sites falls into impact level category 2; indicating moderate impact potential for observing adverse biological effects. All the studied metals except Zn were found below effective range-median (ERM). The present study reveals that surface sediments from west coast of Peninsular Malaysia were exposed to heavy metals pollution; Zn and Cd were observed as metals of Ecotoxicological significant in the present study. Index Terms-Surface sediments, heavy metals, pollution, ecological risk, west coast of Peninsular Malaysia.