Background and Objectives: This study was conducted in summer 2019 with the aim of evaluating the contamination of heavy metals in surface sediments of 4 esturm Majidieh, Zumari, Samaili and Merrimus from the sum of Khormosi and Mousa mouths as control stations.
Methods: A total of 17 stations and 51 sediment samples were collected for measurement of heavy metals (V, Cd, Pb, Ni andHg) using Van Win hydrobiosis.
Findings: Heavy metals concentrations were measured by ICP-MASS. The mean concentrations of heavy metals were higher than nickel (75.23±21.90 mg/kg) > Pb (18.11±5.84 mg/kg) > Cadmium (1.23±6.57 mg/kg) > wanadium (0.24±0.005 mg/kg) >Hg (0.48±0.15 mg/kg). Feeds based on heavy metals concentration per gram of sediment were Majidieh (132.78 mg/kg) > samaili (114.62 mg/kg) > rust (114.62 mg/kg), respectively. 87.79 mg/kg (> 70.43 mg/kg) showed > mouths of Moses (52.84 mg/kg).
Mahshahr chr('39')s sediments showed no contamination in terms of PLI pollution index. The concentration of heavy metals nickel, cadmium in all four esters and lead in Samaili station was higher than the average concentration of these metals in Shell, but based on the ecological risk index except for estuers which had significant ecological risk, other estuers (Merrimus, Majidieh and Samaili estuers) showed very high ecological risk and Musa estux as a control station showed moderate ecological risk. The highest ecological risk belonged to cadmium and mercury.
Conclusion: The findings of this study and its comparison with pollution trend in the region indicate the spread of heavy metal pollution load in Musa esox in recent years.