Study the Potential Uptake of Heavy Metals by Aquatic Plants in Dez River

Document Type : Research Article

Authors

1 Department of Fisheries, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran

2 Department of Environmental engineering, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran

Abstract

In order to evaluate the Phragmites australis, Myriophyllum spicatum and Potamogeton perfoliatus aquatic plant species as an indicator organism of heavy metals pollution in bio-monitoring studies of the aquatic ecosystems, the aim of this study was to determine the levels of heavy metals accumulation Zn, Cu, Pb and Cd in sediments, roots, stems and leaves of these plants in north and south of two stations of Dez River. 3 samples of surface sediment (to 10 cm depth) with 700 g weight of each station by plastic tools were collected and sampling was carried out of each different organ of plants. Results showed the highest and lowest of metals were measured in sediment Zn (270± 55.33 ppm) to (240.33± 50.22 ppm) and Cd (1.10± 0.09 to 1.60± 0.06 ppm), respectively. The concentrations of heavy metals in sediments and plants poses the same trends: Zn> Cu> Pb> Cd. The highest of Zn by Ph. australis in root (300.45± 60.22 ppm), M. spicatum in stem (104.43± 20.66 ppm) and P. perfoliatus in leaves (122.35± 21.44 ppm) were showed. According to results, three plants were showed potential for heavy metals and for each metal selectivity and could use for environmental monitoring.
 

Keywords

Main Subjects

References

 
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Iranian journal of Ecohydrology
Volume 3, Issue 1
March 2016
Pages 133-140

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History

  • Receive Date: 26 January 2016
  • Revise Date: 10 May 2016
  • Accept Date: 07 April 2016

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