Ecological risk assessment through heavy metal concentrations of lead, copper, cadmium, zinc, and nickel in marine sediments of Maspari Island, South Sumatra Indonesia

Heavy metals come from anthropogenic and geological activities.It is necessary to know the concentration of heavy metals in anticipation of pollution of marine ecosystems so this study aims to determine the content of heavy metals lead (Pb), copper (Cu), cadmium (Cd), zinc (Zn), and nickel (Ni) in the sediments of Maspari Island, South Sumatra.Samples were tested for heavy metal levels using atomic absorption spectroscopy (AAS) and processed using Microsoft Excel.All heavy metal geoaccumulation index (I geo ) values were negative, meaning they were less than 0 and categorized as unpolluted.The I geo value closest to 0 is heavy metal Cd of -2.8 at station 8 which is sourced from agricultural runoff water and aquaculture.All heavy metal contamination factor (Cf) values are less than 1 which is included in the low contamination level criteria.The largest PLI value at station 5 is 0.000051425 which is categorized as unpolluted to lightly polluted.The concentrations of heavy metals Pb, Cu, Cd, Zn, and Ni from eight stations did not exceed the quality standards.