Bioaccumulation of Heavy Metals Lead (Pb) and Cadmium (Cd) in Timpakul Periopthalmodon schlosseri and Boleopthalamus boddarti in Kuala Tambangan Village

Abstract

Heavy metals in aquatic ecosystems tend to collect in sediments and the bodies of aquatic biota through a diffusion process or through the food chain. This research was carried out to evaluate the bioaccumulation of lead (Pb) and cadmium (Cd) in the organs of sea bass P. schlosseri and B. boddarti, water, sediment, and small mud crabs as part of the food source. Sample collection was carried out purposively in Kuala Tambangan village. Heavy metal analysis was carried out on gills, skin, liver, kidneys and embalmed fish flesh. Surgical implants were analyzed by the ASS method. The results of the first test showed the highest metal content of Pb was 12.49 mg/kg and Cd was 5.30 mg/kg in the kidneys of P. schlosseri. In the kidneys of the B. boddarti species, the highest Pb content was 7.56 mg/kg and Cd 3.94 mg/kg. In the second test, the heavy metals Pb and Cd in the tympanic organs were not detected (<0.24 mg/kg) for all organs measured. Although most of the Pb and Cd metal contents were undetectable or still below the quality standards, Cd in the liver of P. Schlosseri reached 0.364 mg/kg, exceeding the normal limit. The Pb metal content in tidal waters reached 0.07 ml/l and met the quality standard, while the Pb and Cd content in sediment and mangrove crabs was still below the quality standard, with some heavy metals not being detected.