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:: Volume 15, Issue 3 (2016) ::
IJFS 2016, 15 Back to browse issues page
Distribution pattern of heavy metals in the surficial sediment of Gorgan Bay (South Caspian Sea, Iran)
S.Gh. Ghorbanzadeh Zaferani , A. Machinchian Moradi , R. Mousavi Nadushan * , A.R. Sari , S.M.R. Fatemi
, mousavi.nadushan@gmail.com
Abstract:   (5538 Views)

The Gorgan Bay is an important ecosystem receiving discharge from their tributaries. In this study, concentration of Pb, Zn, Ni, Fe, Al, Cu and As was seasonally determined at 22 sampling points during 2012-2013.Sediment samples were collected using a Van Veen grab. The levels of heavy metals were determined by ICP-AES (Inductively Coupled Plasma Atomic Emission Spectrometry) and AAS (Atomic Absorption Spectrophotometer). The percentages of sand, silt, clay and TOM (Total Organic Matter) in the sediment samples were determined (44.4± 15, 53.4 ± 14, and 2.2± 2.2 and 7.2% ± 1.6, respectively). The results showed that range of Al, As, Cu, Fe, Ni, Pb and Zn in the sediment samples were 0.4-2%, 2.6- 8.6 ppm, 8.1-12.4 ppm, 0.9 – 1.2 % , 11.5-16.8 ppm, 5.9-13.6 ppm and 21.8-28.8 ppm, respectively. In spring, both Al and Ni were higher than the guideline level. In the event that arsenic was exceeds the guidelines in summer. In general, according to the results of EF (Enrichment Factor) and PLI (Pollution Load Index) can be concluded, Gorgan Bay is low risk and not contaminated. According to the results of the nmMDS (non-metric Multidimensional Scaling), PCA (Principal Components Analysis) and the map of distribution of heavy metals, it seems Gorgan Bay are divided into two separate zones (the eastern and the western parts).

Keywords: Distribution pattern, Heavy metals, Sediment, Gorgan Bay
Full-Text [PDF 1197 kb]   (4152 Downloads)    
Type of Study: Orginal research papers | Subject: Biology & physiology
Received: 2016/08/6 | Accepted: 2016/08/6 | Published: 2016/08/6
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Ghorbanzadeh Zaferani S, Machinchian Moradi A, Mousavi Nadushan R, Sari A, Fatemi S. Distribution pattern of heavy metals in the surficial sediment of Gorgan Bay (South Caspian Sea, Iran). IJFS 2016; 15 (3) :1144-1166
URL: http://jifro.ir/article-1-2337-en.html


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Volume 15, Issue 3 (2016) Back to browse issues page
Iranian Journal of Fisheries Sciences Iranian Journal of Fisheries Sciences
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