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Variability of Airborne Dust Fallout and Associated Trace Metals around Industrial Sites in Esfahan,Iran |
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| Authors: | Anahita Moradi Naser Honarjoo Ali Asghar Besalatpour |
| Institution: | 1. Department of Soil Science, Islamic Azad University, Esfahan (Khorasgan) Branch, Esfahan, Iran
Contribution: Data curation (lead), Formal analysis (lead), ?Investigation (equal), Methodology (lead), Resources (equal), Writing - original draft (equal);2. Department of Soil Science, Islamic Azad University, Esfahan (Khorasgan) Branch, Esfahan, Iran;3. Inter 3 – Institut für Ressourcenmanagement, Berlin, Germany Contribution: Conceptualization (equal), Methodology (equal), Supervision (equal), Validation (equal), Visualization (equal), Writing - original draft (equal), Writing - review & editing (equal) |
| Abstract: | The seasonal and spatial variability of airborne dust deposits and associated trace metals such as Pb, Co, Ni, Cd, Mn in 15 sites surrounding a heavily industrialized region in south Esfahan (central Iran) are investigated. Total deposit rates (TDR) of dusts and trace metals are analyzed, contamination factor (CF) and pollution load index (PLI) are also calculated. Furthermore, correlation and cluster analysis are performed to identify the source of the pollution. The highest dust-TDR (15.97 g m?2 per season), the highest concentration of trace metals, CF and PLI are recorded in summer because of the lack of precipitation, high temperature, and drought conditions in this season. Pb and Cd show the highest CF values. In the towns near the two major steel mills in the region (i.e., Esfahan Steel Company and Mobarekeh Steel Complex), the CF values for Pb and Cd are about 13 and 12, respectively (i.e., 13 and 12 times higher than the pre-industrial values, respectively). The spatial distribution maps of the dust deposit rate, dust-borne trace metals, and the obtained PLI of the trace metals in the study area reveal that the two major industries in the region are the main sources of dust and trace metal distribution. |
| Keywords: | air pollution contamination factor industry pollution load index trace metals |