Geochemistry and ecological risk assessment of the coastal Tajan River using sediment quality indices (Southern Caspian Sea, Iran).

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ID: 274788
2021
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Abstract
The present study aimed to reveal correlations between environmental events and geochemistry variation and ecological risks of the coastal Tajan River. Sediment quality indices (Cf, Cd, Er, and RI) were applied to achieve the research objectives based on the concentration of toxic metals (As, Cd, Cr, Cu, Ni, Pb, Zn). The probably effective level is based on the concentration of As, Cr, and Ni observed. The coastal zone and the urban sector of the river have experienced a moderate ecological risk since 1975, especially during wet seasons (1988-1997) with a mean sedimentation rate of 2 cm/year. A significant correlation (r=0.439-0.633, p-values < 0.0001) between the toxic metal concentration and the Caspian Sea level fluctuation was obtained. The lowest concentration of toxic metals coincided with the high stand water level. Management practices recommend controlling toxic metals (As, Cd, Ni, Cr, Pb) from the sources and dredging of retention pounds along the Tajan River.
Reference Key
gharibreza2021geochemistrymarine Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Gharibreza, Mohammadreza;Masoumi, Hamidreza;
Journal Marine pollution bulletin
Year 2021
DOI
S0025-326X(21)01188-7
URL
Keywords
climate change ecological risk sediment quality indices tajan river the caspian sea

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