Evaluation of the source, distribution and risk of metal contaminated stream sediment

The research was conducted to determine the cause, dispersal, and risk assessment of metal-contaminated sediment. sediment collected from Madna stream. It transported laboratory, air-dried, ground with a mortar pestle, sieved. digested 10 ml HNO3 30 HCl heated on hot plate at 100 °C for about 2 hours. 1 solution diluted 50 centrifuged 1600 revolutions per minute minutes. clear analyzed by an atomic absorption spectrophotometer (AAS). distribution average concentration showed that Cd < Cu Co Pb Ni Fe range 0.03–72.81 mg/kg. minimum content 99.78% higher than maximum Ni, values being other metals. geoaccumulation index (igeo), contamination factor (CF), pollution load (PLI) insignificant stream However, enrichment (EF) revealed minor extreme individual metals across stations. Ecological (ERI) Potential ecological (PER) low collective biota ecosystem. There no noncarcinogenic detected as hazard quotient (HQ) (HI) were <1; however, children may suffer carcinogenic (CR) cadmium through nondietary oral route Cadmium CR > 10−6. assessed be high quality posed ecosystem concentrations lower effect (ERL), median (ERM), toxicology reference value (TRV). Based multivariate statistics supported EF, sources pollutants anthropogenic natural.