Pollution level of trace metals (As, Pb, Cr and Cd) in the sediment of Rupsha River, Bangladesh: Assessment of ecological and human health risks

The study area was selected in the Rupsha river basin and sediment samples were collected to determine trace metal concentrations of As, Pb, Cd, Cr along with biological effects, potential ecological human health hazards for adults children. metals detected from sixty composite using an Atomic Absorption Spectrophotometer (AAS) following some sequential analytical procedures. mean organized descending order chromium (Cr) (43.2 mg/kg) > lead (Pb) (29.21 arsenic (As) (5.18 cadmium (Cd) (1.8 mg/kg). current highlighted that attributed riverine sediments natural sources other anthropogenic sources, particularly various industries. Based on effect-range classifications threshold effect concentration (TEC) probable (PEC), can impact sediment-dwelling organisms occasionally especially Cr, Pb. That is, had negative consequences aquatic creatures. assessed risk Cd offers a significant ecosystem, whereas low-risk. Most sites within range moderate risk, indicated by index (RI) values. Furthermore, applied quality indices, geo-accumulation ( I geo ) contaminated contamination factor (CF) denoted moderately polluted However, pollution load (PLI) revealed cumulative sence winter season. age-group (HI) much lower than limit 1, showing no non-carcinogenic effect. Total carcinogenic (TCR) less one-tenth percentile. For sake environmental health, proper monitoring element attribution strict regulation are required lessen pollution.