Trace Metal Contents in the Porites Corals of Peninsular Malaysia
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University of Tehran
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The concentration contents of Ca, Mg, Sr and Zn in Porites corals
from Pulau Langkawi, Pulau Redang and Pulau Tioman were presented. The
corals were cleaned and the growth rate examined visually. The growth
rate of Porites in Malaysia waters was between 5 to 25 mm yr-1 and each
band was selected for determining the metal contents using the Atomic
Absorption Spectrophotometer (AAS). The mean values of Ca (42.1 %), Mg
(1184 μg/g), Sr (6276 μg/g) and Zn (60.6 μg/g) were
calculated from each annual skeleton band representing the yearly
growth. Porites coral from Pulau Langkawi shows a high content of Zn
(118 μg/g) representing the water surrounding the island was
highly polluted and also shows the uptake of Sr and Ca in the coral
skeleton was related to the content of Zn, where Sr and Ca contents
decreases when the concentration of Zn was more than 50 μg/g.
Terrestrial runoff from Sumatera and west coast of Peninsular Malaysia
are presumed to be the cause of pollution in Malacca Straits.
Keywords
Peninsular Malaysia, Trace element, Porite, Coral
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