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Physiochemical Characteristics and Oxidative Potential of Ambient Air Particulate Matter (Pm10) During Dust and Non-Dust Storm Events: A Case Study in Tehran, Iran Publisher



Rezaei S1 ; Naddafi K1, 2 ; Hassanvand MS2 ; Nabizadeh R1, 2 ; Yunesian M1, 3 ; Ghanbarian M1 ; Atafar Z1 ; Faraji M1 ; Nazmara S1, 4 ; Mahmoudi B1 ; Ghozikali MG5 ; Ghanbarian M1 ; Gholampour A7, 8
Authors
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Authors Affiliations
  1. 1. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Center for Air Pollution Research (CAPR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Research Methodology and Data Analysis Department, Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Center for Water Quality Research (CWQR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Department of Environmental Health Engineering, East Azerbaijan Province Health Center, Tabriz University of Medical Sciences, Tabriz, Iran
  6. 6. Department of Environment, Islamic Azad University, Bushehr, Iran
  7. 7. Health and Environment Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
  8. 8. Department of Environmental Health Engineering, School of Public Health, Tabriz University of Medical Sciences, Tabriz, Iran

Source: Journal of Environmental Health Science and Engineering Published:2018


Abstract

In the present study, we investigated the characteristics of metal(loid)s, polycyclic aromatic hydrocarbons (PAHs) and oxidative potential (OP) in PM10 during dust and non-dust days in a rural and an urban area in Tehran. Water-soluble ions, metal(loid)s, PAHs, and OP were measured using ion chromatography (IC), inductively coupled plasma optical emission spectrometer (ICP-OES) and gas chromatography/mass spectrometry (GC-MS), and dithiothreitol (DTT) assay respectively. The results showed that the average concentrations of ambient PM10 were 284 ± 90.4 and 123 ± 31.4 μg m-3 on dusty and regular days in urban areas respectively, and were 258 ± 48.3 and 124 ± 41.4 μg m-3 on dusty and regular days in rural areas, respectively; these values were 95% above the World Health Organization (WHO) guideline level. The crustal elements Na+, Mg2+, Ca2+, Al, Si, Fe and Ti were the dominant for PM10 on dusty days, and NO- 3 and SO4 2- were dominant for PM10 on regular days. The average ± SD concentrations of total PAHs were 34.3 ± 22.5 and 55.1 ± 28.3 ng m-3 on dusty and regular days, respectively, with the maximum value occurring on inversion days. The average OP was 8.90 ± 7.15 and 1.41 ± 0.35 and was 11.4 ± 3.97 and 19.9 ± 8.67 (nmol min-1 μg PM10 -1) for water and methanol extracts on dusty and regular days, respectively, with the lowest value occurring on dusty days. The OP was highly associated with Cu and Mn. Briefly; the results of this study demonstrate that OP is mass independent and consequence a promising proxy for PM mass. © 2018 Springer International Publishing AG.
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