Study of heavy metal content cadmium (Cd) in various sizes of blood shells (Anadargranosa) in coastal Bancaran Bangkalan, Madura

Ocean pollution occurs because of the concentration of population and industrialization in the coastal areas. The existence of heavy metals in the water can be accumulated in aquatic organisms, especially blood shells. The purpose of this study is to know the contents of cadmium (Cd) in blood shells, water, sediments and to determine the relation of blood shell's size with the contents of cadmium (Cd) in the Bancaran Coastal, Bangka, Madura. The research method used was observations of that method. The main parameters are observed that the contents of cadmium (Cd) in seawater, sediment, and blood in the Bancaran Coastal shells. Supporting parameters that observed are water quality include temperature, pH, salinity, DO and brightness. Data analysis is used to find relations of the data Obtained (regression-correlation). The results showed that the contents of cadmium (Cd) of large shells blood are higher than the small and medium blood shells, and there were the relations between the size of the blood shells with the contents of cadmium (Cd). The water quality of Bancaran Coastal was the temperature 28°C-29°C, pH 7-8, the salinity of 30 ppt, the brightness of 30 cm, and DO 5 mg/L.