Volume 23, Issue 2 (Summer 2019)                   jwss 2019, 23(2): 239-250 | Back to browse issues page


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Atashpaz B, Rezapour S. Evaluation of the Ecological Risk Indicators of Cd, Cu, Pb, Zn and Ni in the Irrigated Areas with the Treated Wastewater. jwss 2019; 23 (2) :239-250
URL: http://jstnar.iut.ac.ir/article-1-3664-en.html
1. Department of Soil Science, Faculty of Agriculture, Urmia University, Urmia, Iran. , s_rezapour2000@yahoo.com
Abstract:   (4646 Views)
The present study was conducted to evaluate the ecological risk indices of Zn, Cu, Cd, Pb and Ni in the soils from Urmia region (Ghahramanloo village), as irrigated with treated wastewater. Accordingly, six different soil sites (five soil sites under wastewater irrigation and one soil site under well water irrigation as the control) were selected and sampled (AP horizon, 0-30 cm depth). Soil samples were air dried, passed through a 2-mm sieve, and analysed to determine the chemical properties and the studied heavy metals. The results showed that irrigation with the treated wastewater significantly increased the total elements in the order of Cd (228%)> Zn (118.5%)> Ni (81.5%)> Pb (54.2%)> Cu (23.5%). Nevertheless, with the exception of cadmium, other elements were within the admissible range based on the national and international standards. Ecological risk index (min = 125, max = 152, mean = 140) showed a considerable risk in all studied soils and Cd could be regarded as the major metal affecting the index yield.
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Type of Study: Research | Subject: Ggeneral
Received: 2018/02/7 | Accepted: 2018/08/12 | Published: 2019/09/1

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