Volume 5, Issue 3 (Summer 2016)                   Arch Hyg Sci 2016, 5(3): 172-178 | Back to browse issues page

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Sobhan Ardakani S, Taghavi L. Nickel, Lead and Zinc Contamination in the Surface Sediments of Agh Gel Wetland, Iran. Arch Hyg Sci 2016; 5 (3) :172-178
URL: http://jhygiene.muq.ac.ir/article-1-94-en.html
Nickel, Lead and Zinc Contamination in the Surface Sediments of Agh Gel Wetland, Iran
Soheil Sobhan Ardakani * 1, Lobat Taghavi2
1- Department of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran
2- Department of the Environment, Faculty of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran
Abstract:   (5226 Views)

Background & Aims of the Study: Due to the increased human activities around the Agh Gel wetland, this study aimed to measured accumulations of heavy metals (Ni, Pb and Zn) in the surface sediment samples taken from this wetland.

Materials & Methods: Samples were taken from 10 stations and exposed to bulk digestion and chemical partitioning. Finally, Ni, Pb and Zn concentrations were monitored with ICP-OES in the sediments. Also, geo-accumulation index, contamination factor and pollution load index were used to evaluate the magnitude of contaminants in the sediment profile.

Results: The results showed, the average of metal concentration in samples (mg kg-1 wet weight) were 34.20±3.58 for Ni, 25.37±2.52 for Pb and 127.20±15.21 for Zn, respectively. Therefore, the pattern of metal concentrations in sediment was determined as Zinc>Nickel >Lead. According to the mean I-geo values, sediments' qualities are classified as unpolluted category for Ni and Pb. Also, sediment's quality is classified as unpolluted to moderately polluted for Zn. The CF values for all elements are classified as moderate contamination. The PLI values indicated that metal pollution exists for all sampling stations.
Conclusions: The obtained results indicated that the Agh Gel wetland has a potential to threaten by chemical pollutants such as agricultural effluent. So, in order to preserve the environment of the Agh Gel wetland from deterioration, monitoring of water and sediment qualities is recommended periodically.
Keywords: Heavy Metal, Aquatic ecosystem, Surface sediment, Agh Gel wetland, Iran
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Type of Study: Original Article | Subject: Environmental Health
Received: 2016/03/1 | Accepted: 2016/06/26 | Published: 2016/07/9
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