Abstract:
The batissaviolaceamolluscs popularly known as Karawauw is one of the marine resources of Wondama Bay which their consumption and commercial value. The increase in population and shipping and fishing activities have an impact on the quality of the surrounding waters. This study aims to determine the concentration of Cu and Cd metals in water, sediment, and the BatissaViolacea in the Wosimi River and to determine the bioaccumulation factor of the Batissaviolacea toward Cu and Cd metals in the Wosimi River. The sampling method for molluscs used random sampling methods, water and sediment samples were taken at the same location as molluscs sampling location. The method used to determine heavy metals content was Atomic Absorption Spectrophotometry (AAS) method. The concentration of Cu in the water ranged from <0,0001 to 0.0094 mg/L, the concentration of Cu in the sediments ranged from 2,60 to 29,74 mg/kg and the concentration of Cu in the batissaviolacea ranged from 9,0335 to 34,9200 mg/kg. The concentration of Cd in the water ranged from <0,0001 to 0.0113 mg/L, the concentration of Cd in the sediments ranged from <0,0001 to 6,5400 mg/kg and the concentration of Cd in the batissaviolacea is <0,0001 mg/kg at all location. Bioaccumulation factors (BAFo-w) for Cu metal at location IV (K2) is 6020.48 which classified as a high accumulation level, the BAFo-s value for Cu metal at location III (K2) is 8.81 or classified as a low accumulation level.
