Browsing by Author "Zahid, Ahmad"

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    Assessment Of Heavy Metals (Al, Zn, Cu, Cd, Pb And Hg) In Demersal Fishes Of Kuala Tanjung Coast, North Sumatra
    (2016-04-02) Simanjuntak, Charles; Djumanto; Rahardjo; Zahid, Ahmad
    The presence of heavy metals in aquatic environment has been of great concern because of their toxicity when their concentration is more than the permissible level. This study was carried out to assess concentrations of six heavy metals (Al, Zn, Cu, Cd, Pb and Hg) in the muscle and liver of Chiloscyllium punctatum, Chiloscyllium indicum, Johnius belangeri, Nibea soldado, Otolithes ruber, Paratrypauchen microcephalus, Cynoglossus lingua, and Cynoglossus puncticeps from Kuala Tanjung coastal waters. The levels of Al, Zn, Cu, Cd and Pb were measured by Graphite Furnace Atomic Absorption Spectroscopy (GFAAS) technique; whereas Hg was measured by Cold Vapour Atomic Fluorescence Spectroscopy (CV-AFS) technique. The bioaccumulation of Al, Zn and Cu was predominant followed by Cd, Pb and Hg both in muscle and liver tissue of fish sample. The concentration range of Al, Zn, Cu, Cd, Pb and Hg in muscle was 0.01-16.9, 2.97-11.5, 0.01-0.37, 0.001-6.400,