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Assessing the environmental potential risk of pollution associated with heavy metals in water and sediment of the Tajan and Babolrood Rivers
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Fatemeh Sancholi   , Hadi Raeisi * , Sarah Haghparast , Rahman Patimar , Hossein Rahmani |
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Abstract: (886 Views) |
Introduction: Preserving river water quality for use in agriculture, fish farming, and industry in the surrounding cities and villages is particularly important. This research was conducted to assess heavy metals level and their pollution status in the water and sediment of the Tajan and Babolrood Rivers, North of Iran, Mazandaran Strait.
Materials & Methods: To do this, water and sediment samples were collected at four sites (inside the sea, estuary, 1km to the estuary, and 2 km to the estuary). A portable multi-problem meter determined water physicochemical parameters including salinity, temperature, pH, electrical conductivity, and dissolved oxygen. The concentration of heavy metals, iron (Fe), cobalt (Co), cadmium (Cd), chromium (Cr), nickel (Ni), lead (Pb), copper (Cu), zinc (Zn), and manganese (Mn) in water and sediment were determined using ICP-EOS. As was read by spectrometry atomic absorption is attached to hybrid generation. To assess the environmental potential risk of pollution associated with heavy metals in sediment, contamination factor (Cf), Pollution load index (PLI), metal index (MI), Environmental potential risk (Er) and total potential risk (RI) were applied.
Results: Results indicated that the concentration of As, Co, Cr, Cu, Ni, Pb, and Zn in the water of the Tajan and Babolrood were less than the detectable limit (<0.05 µg/l). Heavy metals concentration measured in the sediment of both rivers were as follows: Fe>Mn>Cr>Zn>Ni>Cu>Pb>Co>As. In total, the concentration of heavy metals measured in the sediment of the Babolrood River was much higher than their counterparts in the Tajan River.
Conclusion: Based on Cf, PLI, and MI, coastal stations of the Tajan and Babolrood Rivers showed a moderate degree of pollution and metal as polluted the sites much higher than other metals. Er and RI indices revealed a low level of ecological risk in the estuarine and downstream sites of the Tajan and Babolrood Rivers. |
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| Keywords: Heavy Metal, Sediment, Water, Tajan, Babolrood |
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Full-Text [PDF 1419 kb]
(351 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2025/09/7 | Accepted: 2025/10/2 | Published: 2025/10/2
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