Mohsen Bayatzadeh - Department of Environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
Fatemeh Karimi Organi - Department of Environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
Azita Koshafar - Department of Environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
Sima Sabzalipour - Department of Environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
Maryam Mohammadi Roozbahani - Department of Environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.

Background: This research in the period of ۱۴۰۰-۱۳۹۹ aims to determine the amount of increase in the volume of heavy metals in the water and sediments of Hawizeh Marshes, to determine Risk Quotient as well as the evaluations of TDS, TSS and TOC in two seasons, summer and winter, and in four (space) was done using the ECOFATE model. Methods: The measurement of this heavy metal was done by atomic absorption method with the help of Perkin Elmer ۴۱۰۰ device. The data were analyzed using SPSS Software Version ۱۷, and were compared with one-way ANOVA.Results: The output results of the environmental fate model in the sediments showed that the amount of lead, TDS and TOC in the two seasons of summer and winter in the sediments and water of the lagoon in the ۳D space ۴ and the amount of TSS in these two seasons in the space of ۳ The next three had the highest value. The values of TSS and TOC were within the permissible limits compared to the standards of the Iranian Environmental Protection Organization and EPA, but the amount of TDS was higher than the standard. By determining the ecological risk with the help of (RQ) for lead metal. Conclusion: it was found that the wetland ecosystem has a high risk in the sedimentary environment and in the medium risk range in the water environment, which indicates that the environmental health of the wetland is endangered, which is aimed at maintaining It should be considered.

Hawizeh marshes, Heavy metal, Environmental Fate, Sediment, ECOFATE