On the chemical nature of precipitation in a populated Middle Eastern Region (Ahvaz, Iran) with diverse sources

Abolfazl Naimabadi, Mohammad Shirmardi, Heidar Maleki, Pari Teymouri, Gholamreza Goudarzi, Abbas Shahsavani, Armin Sorooshian, Ali Akbar Babaei, Nasim Mehrabi, Mohammad Mehdi Baneshi, Mohammad Reza Zarei, Abdolmajid Lababpour, Mohammad Ghanbari Ghozikali

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

This study reports on the chemical composition of rainwater collected at three ground sites with varying degrees of pollution in Ahvaz, Iran, between January 2014 and February 2015. A total of 24 rainwater samples were analyzed for pH and concentrations of trace elements (Fe, Al, Pb, and Cd) and major ions (Na+, NH4 +, Ca2+, Mg2+, HCO3 , NO3 , Cl and SO4 2−). Principle Component Analysis (PCA) was used to identify sources of the measured species. The equivalent concentration of the components followed the order of Ca2+ > SO4 2− > HCO3 > NH4 + > Cl > Na+ > NO3 > Mg2+. The average pH of the rainwater samples was 6, and only three events exhibited acidic conditions below a pH of 5.6. The lowest and the highest average pH values were observed in the high traffic area (5.96) and industrial area (6.54), respectively. The highest and lowest Ca2+ levels were observed in the industrial and high traffic areas, respectively. Na+, Mg2+, and SO4 2− exhibited their highest and lowest concentrations in the industrial and high traffic areas, respectively. 70.36% of the total variance was due to anthropogenic species (Ca2+, SO4 2−, Mg2+, NO3 , Cl), soil particles (Cl, Na+, and HCO3 ), and biomass burning (NH4 +, pH). The results of this study show that local anthropogenic sources and Middle Eastern Dust (MED) storms affect the rainwater chemistry strongly, which the latter stems from the Arabian Peninsula, Kuwait, Iraq, and some parts of Iran.

Original languageEnglish (US)
Pages (from-to)558-566
Number of pages9
JournalEcotoxicology and Environmental Safety
Volume163
DOIs
StatePublished - Nov 15 2018

Keywords

  • Ahvaz
  • Chemical elements
  • Factor analysis
  • Rainwater chemistry
  • Trace elements

ASJC Scopus subject areas

  • Pollution
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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    Naimabadi, A., Shirmardi, M., Maleki, H., Teymouri, P., Goudarzi, G., Shahsavani, A., Sorooshian, A., Babaei, A. A., Mehrabi, N., Baneshi, M. M., Zarei, M. R., Lababpour, A., & Ghozikali, M. G. (2018). On the chemical nature of precipitation in a populated Middle Eastern Region (Ahvaz, Iran) with diverse sources. Ecotoxicology and Environmental Safety, 163, 558-566. https://doi.org/10.1016/j.ecoenv.2018.07.103