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:: Volume 20, Issue 1 (Iranian South Medical Journal 2017) ::
Iran South Med J 2017, 20(1): 18-30 Back to browse issues page
Study of Concentrations of Available Cations and Anions in PM2.5 in the Air of Twelfth Region of Tehran City
Hossean Arfaeinia1, Seyed Enayat Hashemi2, Ramin Nabizadeh3, AliAsghar Alamolhoda4, Majid Kermani5
1- Department of Environmental Health Engineering, School of Public Health, Bushehr University of Medical Sciences, Bushehr, Iran
Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
2- Department of Environmental Health Engineering, School of Public Health, Bushehr University of Medical Sciences, Bushehr, Iran
3- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
4- Institutes of Water and Energy, Sharif University of Technology, Tehran, Iran
5- Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran , majidkermani@yahoo.com
Abstract:   (5815 Views)

Background: In the last few decades, the city's air quality has become a major concern; especially there is strong evidence about health effects of particulate matter in urban communities.In addition to suspended particles concentration, the ionic part of suspended particles is also very important, So that some studies  ions like Sulfate is the reson of increasing the respiratory diseases.So the aim of this study was to study of concentration of PM2.5 particles and their ionic componentsincluding major anions and cations in twelfth region of Tehran city in 2013.

Materials & Methods: This cross - sectional study was conducted in the air of twelfth region of Tehran. PM2.5 concentration was calculated with sampling by frmOMNITMAmbient Air Sampler with PTFE filter with a diameter of 47 mm and through the weight measurement.Concentration of anions and cations which had associated with PM2.5 particles was read after collected sample preparation and injection to device Ion Chromatography (IC) Metrohm 850 model. Correlation matrix was calculated between anions and cations. Data analysis was carried out by Excel and SPSS version 18 and One-Way ANOVA test.

Results: The mean daily concentration of PM2.5 particles was 19.41 µg/m3 during the study. One-Way ANOVA test showed a significant difference at the 0.05 level between PM2.5 concentrations on different days of the week. Concentrations for sodium, potassium, ammonium, calcium, magnesium, sulfate, nitrate, chloride were obtained 0.28, 0.06, 0.49, 0.87, 0.63, 56.3, 1.43 and 0.71 µg/m3, respectively, and no value was detected for fluoride and nitrite. Balance between anions and cations were calculated and the correlation coefficient (R2) were obtained 0.972 between the anions and cations.

Conclusion The mean concentrations of PM2.5 was higher than the air standards in Iran and WHO guidelines (25 µg/m3) and EPA standards (35 µg/m3). In a study reported that the One-Way ANOVA test between particle concentrations on various days of the week indicated similar results. Sulfate and nitrate, and after that calcium had the highest concentrations. A high correlation was observed between the anions and cations. Correlation matrix between the anions and cations indicated that probable compounds in PM2.5 particles could be be (NH4)2SO4, CaSO4, CaCl2, KCl, K2SO4, NaCl and Ca(NO3)2.

Keywords: Suspended particles of PM2.5, anions, cations, Tehran
Full-Text [PDF 1061 kb]   (4016 Downloads)    
Type of Study: Original | Subject: Public Health
Received: 2016/02/7 | Accepted: 2016/05/10 | Published: 2017/02/26
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Arfaeinia H, Hashemi S E, Nabizadeh R, Alamolhoda A, Kermani M. Study of Concentrations of Available Cations and Anions in PM2.5 in the Air of Twelfth Region of Tehran City. Iran South Med J. 2017; 20 (1) :18-30
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