Abstract:
Laguna Tujoh and Sungai Semerak are two of the largest locations for cage culture
activity in Kelantan. Fish such as Asian seabass, Tilapia and Grouper are the common types of
cage cultured organism. Twenty fishes and five sediments samples were collected from each
study area to determine the concentration of Fe, Pb, Cu and Co as well the bioaccumulation
factor (BAF) of each studied metals. Samples were digested using microwave digestion method
which then measured using Inductively Coupled Plasma Optical Emission Spectrometry (I CP
O ES). Liver was accumulated the highest concentration of Fe in Laguna Tujoh with 386 mg/kg
in Asian seabass and 205 mg/kg in Tilapia, while in Sungai Semerak with 139 mg/kg in Asian
seabass and 193 mg/kg in hybrid Grouper. Bioaccumulation Factor (BAF) of muscle was
calculated from the ration of concentration in the muscle over sediment. BAF values greater
than 1 was found for Cu in the liver of all types of fish except for hybrid Grouper. This suggests
that liver could be a good bioindicator of Cu pollution.
