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:: Volume 6, Issue 3 (Summer 2019) ::
Environ. Health Eng. Manag. 2019, 6(3): 151-156 Back to browse issues page
Investigation of heavy metals concentration in soil around a PbZn mine and ecological risk assessment
Amir Hossein Baghaie , Forough Aghili
Corresponding author: Department of Soil Science, Arak Branch, Islamic Azad University, Arak, Iran , a-baghaie@iau-arak.ac.ir
Abstract:   (4709 Views)
Background: Soil pollution with heavy metals seriously threatens soil quality, food safety, and human health. This study was conducted to determine the soil pollution level and ecological risk assessment of different heavy metals in agricultural soils around Nakhlak Pb-Zn mine, located in Anarak district, Nain county of Isfahan province.
Methods: A total of 50 soil samples were collected from agricultural land around Nakhlak mine and analyzed to determine the concentrations of Pb, Cd, Zn, Ni, Cu, and Mn. The geo-accumulation index (I geo), enrichment factor (EF), and potential ecological-risk index (Er) were used to assess the level of soil pollution with heavy metals.
Results: The mean concentrations of Pb, Cd, Zn, Ni, Cu, and Mn were 355, 2.72, 347, 26, 36, and 505 mg/kg, respectively, which were higher than the background values of world soils. Based on the Igeo index, the study area was moderately to heavily contaminated with Pb and Zn, uncontaminated to moderate contaminated with Cd and Cu, and uncontaminated with Mn and Ni. According to the EF values, the study soil was moderately contaminated with Mn, Ni, and Cu, significantly contaminated with Cd and Zn, and highly enriched with Pb. The RI values showed a moderate level of heavy metals
contamination in the study soil.

Conclusion: According to the results, the ecological risk of heavy metals for ecosystem in agricultural lands around Nakhlak Pb-Zn mine is moderate. However, the contamination status should be considered periodically.
Keywords: Soil, Lead, Zinc, Risk assessment, Pollution
eprint link: http://eprints.kmu.ac.ir/id/eprint/31538
Full-Text [PDF 632 kb]   (1653 Downloads)    
Type of Study: Original Article | Subject: Special
Received: 2019/08/30 | Accepted: 2019/08/30 | Published: 2019/08/30
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Baghaie A H, Aghili F. Investigation of heavy metals concentration in soil around a PbZn mine and ecological risk assessment. Environ. Health Eng. Manag. 2019; 6 (3) :151-156
URL: http://ehemj.com/article-1-521-en.html


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Volume 6, Issue 3 (Summer 2019) Back to browse issues page
Environmental Health Engineering And Management Journal Environmental Health Engineering And Management Journal
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