Comparison of Heavy Metal Content of Mercury (Hg), Cadmium (Cd), and Lead (Pb) in Batak Fish (Tor soro), Water Column, and Sediment Affected by Industrial Waste Activities in the Asahan River, North Sumatra, for Management Efforts
This study compares the levels of heavy metals mercury (Hg), cadmium (Cd), and lead (Pb) in Batak fish (Tor soro), water columns, and sediments of the Asahan River affected by industrial waste. Results indicate that Pb and Cd levels in water remain within quality standards, while heavy metal concentrations in sediments are below environmental risk thresholds.