Volume 26, Issue 136 (5-2016)                   J Mazandaran Univ Med Sci 2016, 26(136): 109-120 | Back to browse issues page

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Ravankhah N, Mirzaei R, Masoum S. Human Health Risk Assessment of Heavy Metals in Surface Soil. J Mazandaran Univ Med Sci. 2016; 26 (136) :109-120
URL: http://jmums.mazums.ac.ir/article-1-7486-en.html
Abstract:   (5718 Views)

Background and purpose: Soil heavy metal contamination is a major environmental concern. Contaminants in urban soils can directly pose significant human health risks through oral ingestion, particle inhalation, and dermal contact. The purpose of this study was to determine the health risk of heavy metals in surface soils in Aran-Bidgol, Iran.

Materials and methods: A descriptive cross-sectional study was performed in which 135 topsoil samples were collected from Aran-Bidgol (in Isfahan province) and the metal concentrations of Cd, Pb, Ni, Zn and Cu were determined. Carcinogenic and non-carcinogenic human health risks of heavy metals in surface soils through oral ingestion, inhalation and dermal contact pathways for children and adults were evaluated using the US Environmental Protection Agency (EPA) approved method.

Results: The mean concentrations of Cd, Pb, Ni, Zn and Cu, were 0.72, 11.41, 29.87, 48.59, and 14.82 mg/kg, respectively, which all exceeded the background values. The highest non-cancer risks for both children and adults were found in Pb (12.63 and 0.82, respectively) while the lowest values were observed in Zn (0.3 and 0.04, respectively). The total accumulated non-cancer risk (HI) of all heavy metals for children and adults were more than 17 and 2, respectively. The cancer risk values were 6.37E-06 (Cd), 6.78E-06 (Pb), and 3E-04 (Ni) for children and 1.12E-06 (Cd), 1.19E-06 (Pb), and 6.19E-05 (Ni) for adults.

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Type of Study: Research(Original) | Subject: Environmental Health

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