Volume 8, Issue 4 (3-2016)                   ijhe 2016, 8(4): 401-410 | Back to browse issues page

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Kamani H, Hoseini M, Safari G, Mahvi A, Zarei H. Factors affecting the concentrations of heavy metals in precipitation of Tehran using factor analysis method. ijhe. 2016; 8 (4) :401-410
URL: http://ijhe.tums.ac.ir/article-1-5026-en.html
1- Health Promotion Research Center and School of Public Health, Zahedan University of Medical Sciences, Zahedan, Iran
2- Schools of Public Health, Shiraz University of Medical Sciences, Shiraz, Iran
3- Schools of Public Health, Tabriz University of Medical Sciences, Tabriz, Iran
4- Center for Solid Waste Research (CSWR), Institute for environment Research, Schools of Public Health, Tehran University of Medical Sciences, Tehran, Iran , ahmahvi@yahoo.com
5- Schools of Public Health, Ahvaz University of Medical Sciences, Ahvaz, Iran
Abstract:   (5836 Views)

Backgrounds and Objectives: Quantity of trace metals in the wet precipitation can illustrate the environmental pollution of different urban areas. Up to now, there is no study regarding the chemistry of wet precipitation in Tehran .The objectives of this study are: measurement of heavy metal concentrations and identification of the main factors affecting the heavy metal concentrations in wet precipitation using factor analysis method.

Materials and Methods: This was a cross-sectional study in which measurements of heavy metals were performed in 53 wet precipitation samples collected from a central site of Tehran City, capital of Iran. The samples were collected during November to May in 2010, 2011 and 2012 on the roof of the student’s dormitory building of Tehran University of Medical Sciences and then the concentration of heavy metals in each sample was measured with ICP-MS.

Results: pH ranged from 4.2 to 7.1 with a mean value of 5.1 indicating in acidic range. Result of EF calculations revealed that samples were not enriched with Fe and Cr but were enriched with Zn, Cd, Ni, Pb and Cu. Factor Component Analysis with Varimax normalized rotation showed Al, Fe and Cr are originated from crustal source and Zn, Cd, Ni, Pb and Cu are originated from anthropogenic sources. 

Conclusion: EF and acidic pH values indicate Tehran is under the influence of extremely anthropogenic activities. Large number of vehicles and industrial activity in the city are undoubtedly responsible for the emission of a wide range of pollution.

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Type of Study: Research | Subject: General
Received: 2013/07/11 | Accepted: 2013/12/5 | Published: 2016/03/1

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