Heavy metal contamination in surface sediments of four important rivers leading to the Caspian Sea

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Abadi Mohammad; ZAMANI ABBAS ALI; Parizanganeh Abdolhossein; KHOSRAVI YOUNES; Badiee Hamid

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Journal: JOURNAL OF WETLAND ECOBIOLOGY Year:2019 | Volume:11 | Issue:40 Page(s): 67-82

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Title

Heavy metal contamination in surface sediments of four important rivers leading to the Caspian Sea

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Keywords

PollutionQ2

Environmental IndicatorsQ2

SedimentQ2

RiverQ2

Caspian SeaQ1

Abstract

Heavy metals tend to be adsorbed and accumulated in Sediments as opposed to water or suspended solids. Sediments and biota bodis can act as a final sink for heavy metals in the aquatic environments. They accumulate through the food chain posing potential biological and ecological risks. Therefore, research on the heavy metal concentrations in aquatic ecosystems can help to protect human health and reduce the risks of heavy metal contamination. In this study, the contamination of heavy metals (Fe, Zn, Mn, Cu, Ni, Pb, Cd and Co) in surface Sediments (0– 5 cm) from 16 stations within four River intertidal zones (Neka, Tajan, Siahrood and Talar) were sampled and analyzed for metal contamination assessment in summer 2016. Results show that the mean concentration (mg kg-1) of heavy metals in surface Sediment samples followed the order; Fe (23300. 00) >Zn (2028. 87) >Mn (701. 25) >Ni (36. 77) >Pb (25. 77) >Cu (19. 62) >Co (18. 62) >Cd (5. 62). The mean concentration levels of the heavy metals Pb, Zn and Cd were more than mean background value. The statistical analyses showed that concentration of elements Fe, Mn, Co and Cu in the Siahrood River, Cd in Neka River and Zn in Tajan River is different (P<0. 05). Application of contamination factor (Cf), potential ecological risk factor of individual metals (Er), enrichment factor (EF) and geo-accumulation index (Igeo) showed that the highest value of the above factors belongs to cadmium element. Also an assessment potential ecological risk index (RI), contamination degree (Cd) and Pollution load index (PLI) suggests a considerable to very high ecological risk in Neka River. In addition to revealing potential ecological risks due to cadmium and other elements, our investigation markedly highlighted anthropogenic control over Sediment quality deterioration and some immediate Sediment quality management strategies are needed to remediate and control River bed contamination.

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APA: Copy

Abadi, Mohammad, ZAMANI, ABBAS ALI, Parizanganeh, Abdolhossein, KHOSRAVI, YOUNES, & Badiee, Hamid. (2019). Heavy metal contamination in surface sediments of four important rivers leading to the Caspian Sea. JOURNAL OF WETLAND ECOBIOLOGY, 11(40 ), 67-82. SID. https://sid.ir/paper/359670/en

Vancouver: Copy

Abadi Mohammad, ZAMANI ABBAS ALI, Parizanganeh Abdolhossein, KHOSRAVI YOUNES, Badiee Hamid. Heavy metal contamination in surface sediments of four important rivers leading to the Caspian Sea. JOURNAL OF WETLAND ECOBIOLOGY[Internet]. 2019;11(40 ):67-82. Available from: https://sid.ir/paper/359670/en

IEEE: Copy

Mohammad Abadi, ABBAS ALI ZAMANI, Abdolhossein Parizanganeh, YOUNES KHOSRAVI, and Hamid Badiee, “Heavy metal contamination in surface sediments of four important rivers leading to the Caspian Sea,” JOURNAL OF WETLAND ECOBIOLOGY, vol. 11, no. 40 , pp. 67–82, 2019, [Online]. Available: https://sid.ir/paper/359670/en

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