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Cr>Ni>Cu>Pb>As>Cd respectively. The results well identified the polluted and clean ranges of the Karoun River, Panjoum bridge to Farsit. Accordingly, the downstream of the study area of Karoun river (panjom bridge to Farsit) were polluted by the toxic metal of As and upstream of the urban area, and adjacent to the effluent of industrial estates to the river were contaminated considerably by the heavy metal of Cr and Ni at a risky level. Finally, the areas from Abu Debes village to Golestan town are clean from heavy elements. Ni and Cr have a concentration higher than PEL level and there is a possibility of poisoning for aquaculture and water users. Cluster analysis and correlation coefficient show high correlation and similarity between Ni, Cr and As in the B group and Pb, Zn and Cu in the A group. This correlation indicates the same origen or similar geochemical behavior. The research results emphasize the effect of urban-rural pollution (surface water drainage, construction waste and rubbish), industrial and agricultural effluents on the pollution of water resources and sediment of Karoun River, Panjoum Bridge to Farsit.]]>
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