Development of soil pollution risk index in the vicinity of a waste dam in Chadormalu iron ore mine

  • A. Kashefighasemabadi
  • A. KarbassiEmail author
  • M. Tabatabaee
  • A. M. Dehabadi
Original Paper


Soil pollution caused by anthropogenic activities or natural factors results in reduced quality of environment. Fourteen elements, including Ti, Al, Fe, Cr, V, Pb, As, Sc, Zn, Cu, Co, Mn, Ca and Mo, in 20 soil samples and a wildflower called Anabasis Setifera on the tailing pond of Chadormalu iron ore in Iran were assessed. Metals were measured using inductively coupled plasma mass spectrometry (ICP-MS). Enrichment factor and contamination factor were employed to assess the ecological risk. C f i value within the range of 1.00–1.12 indicates the mean contamination of the soil, and E r i value within the range of 1–10 represents the low ecological risk of the elements in the soil. Transfer factor (Tri) was also used to calculate the transfer of heavy metals from soil to plant. Tri value within the range of 1.63–29.01 shows that the plant induces the transfer of contaminants from soil. The order of the transferred elements in terms of amount is as: Co > Ti > Cr > Al > Mn > Fe > Ca > V>Cu > Pb > Zn > As > Mo > Sc. Geo-accumulation (Igeo) and pollution indices have showed some weaknesses in assessing the high values of the elements. Therefore, in this study, a new index as level of pollution, Ln (LP), was developed to evaluate the contamination of soil by various concentrations of the elements. Based on Igeo and IPOLL, the pollutants fall within the class of 0 which indicates no pollution. The Ln (LP) index calculated as 0.069–1.166 shows that the studied elements, except for cobalt, had no pollution.


Contamination factors Ecological risk Heavy metals Soil pollution Iron ore mine 



Special thanks to Chadormalu Mining and Industrial Company’s management for letting us to use its laboratory for sampling and sample preparation process (Import Permit No: 1395/2). The authors would also like to thank Professor Abdolreza Karbassi, Faculty of Environment in University of Tehran, for his valuable and constructive suggestions and full cooperation in conducting the project. The authors also appreciate the staff of Chadormalu laboratory and Zarazma laboratory in Tehran for their collaboration in sampling, chemical analysis of the samples and statistical analysis of the data.


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Copyright information

© Islamic Azad University (IAU) 2019

Authors and Affiliations

  1. 1.Department of Agriculture and Natural Resources, Yazd BranchIslamic Azad UniversityYazdIran
  2. 2.Faculty of Environment, College of EngineeringUniversity of TehranTehranIran
  3. 3.Department of Chemistry, Yazd BranchIslamic Azad UniversityYazdIran

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