Anthropogenic share of metal contents in soils of urban areas | ||
| Pollution | ||
| مقاله 13، دوره 4، شماره 4، زمستان 2018، صفحه 697-706 اصل مقاله (918.75 K) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/poll.2018.261506.474 | ||
| نویسندگان | ||
| G. Fazeli1؛ A.R. Karbassi* 2؛ Sh. khoramnejadian1؛ T. Nasrabadi2 | ||
| 1Department of Environment, Damavand branch, Islamic Azad University, Damavand, Iran | ||
| 2School of Environment, College of Engineering, University of Tehran, Tehran, Iran | ||
| چکیده | ||
| In the present investigation, 41 soil samples were subjected to single step chemical partitioning to assess the lithogenic and non-lithogenic portions of metals in Tehran's soils. The share of various studied metals in the anthropogenic portion ranges from as low as 0.2% to as high as 85% of bulk concentration. Geo-accumulation index (Igeo) showed that Cd falls within "heavily contaminated" soils. It might be inferred that Ni, Cu, Cr, Zn, Co and Ca fall within "Deficient to minimal" class in accordance with enrichment factor (EF) classification.. Enrichment factor values (to some extents) match with the chemical partition studies results (except for Ni and Cr). The very low Ca content of soil samples could be indicative of low biological productivity in the Tehran's soil. Also the very low concentrations of Mn could be indicative of reducing environment in soils of Tehran. | ||
| کلیدواژهها | ||
| Pollution؛ indices؛ Metals؛ Contamination؛ soil؛ risk؛ Geochemistry؛ environment؛ Urban area؛ TEHRAN | ||
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