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Ecological Risk Assessment of Heavy Metal Pollution in Sediment of
Terengganu River
Atikah binti Md. Yaziz
Supervisor: Dr. Nor Bakhiah binti Baharim
Bachelor of Science (Marine Science)
School of Marine and Environmental Sciences
Universiti Malaysia Terengganu
15 surface sediments from different sampling stations were collected from Terengganu
River which was located at west coast of Peninsular Malaysia. This study was
conducted to detect the concentration of heavy metal pollution and ecological risk
assessment for selected heavy metals which were Fe, Mn, Cu, Cd, Pb and Zn. The
average concentration for Fe -0.0101 µg/g to 10.25052 µg/g, for Mn -0.08819 µg/g
to 89.9366 µg/g, for Cu -0.02469 µg/g to 1.289421 µg/g, for Cd -0.00998 µg/g to
0.0003393 µg/g, for Pb -0.0474 µg/g to 1.3926 µg/g and for Zn -0.38583 µg/g to
3.193613 µg/g. Enrichment factor (EF), contamination factor (CF), index of
geoaccumulation (Igeo), pollution load index (PLI) and potential ecological risk index
(PERI) are the five indices which used to detect pollution of the river. The value of EF
was not exceeding the level of moderately enrichment while based on the value of CF,
Igeo, PLI and PERI the area was detected as uncontaminated.
Key words: Surface sediment of river, Heavy metals, Ecological risk assessment,
Enrichment factor, Contamination factor, Index of geoaccumulation,
Pollution load index
1861 | UMT UNDERGRADUATE RESEARCH DAY 2018