Evaluation of organic carbon, elemental carbon, and water soluble organic carbon concentration in PM2.5 in the ambient air of Sina Hospital district, Tehran, Iran

سال انتشار: 1395
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 398

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شناسه ملی سند علمی:

JR_JAEHR-4-2_005

تاریخ نمایه سازی: 1 مرداد 1397

چکیده مقاله:

In the present study, carbon species including organic carbon (OC), elemental carbon (EC), and water-soluble organic carbon (WSOC) concentration in PM2.5 were assessed at an urban site of Tehran, Iran during March to June 2014. The PM2.5 samples were collected using an frmOMNITM Ambient Air Sampler. Thermal gravimetric analysis (TGA) was used to analyze OC and EC. The results showed that PM2.5 concentrations varied from 14.32 to 74.45 μg/m3 with an average value of 41.39 μg/m3. The results also showed that carbon species varied from 5.52 to 23.21 (15.35 ± 6.05) μg/m3 for OC and 1.03 to 4.16 (2.25 ± 0.65) μg/m3 for EC. As the findings indicated, the mean PM2.5 level in the sampling area was higher than the annual average determined by the United States Environmental Protection Agency (EPA) as the ambient air quality standard. On average, carbon species (OC, EC, and WSOC) account for almost 60% of PM2.5 mass in the atmospheric outflow from a downwind site. OC and EC concentrations in atmospheric PM2.5 collected at the sampling site were lower than the values reported for other urban areas with high or medium vehicular traffic and/or industrial sources. Moreover, the results obtained in this research can provide a valuable data base for health risk evaluation of the local residents and prioritization of control actions.

نویسندگان

Hossein Arfaeinia

Department of Environmental Health Engineering, School of Public Health, Bushehr University of Medical Sciences, Bushehr AND ran University of Medical Sciences, Tehran, Iran

Seyed Enayat Hashemi

Department of Environmental Health Engineering, School of Public Health, Bushehr University of MedicalSciences, Bushehr, Iran

Ali Asghar Alamolhoda

Institutes of Water and Energy, Sharif University of Technology, Tehran, Iran

Majid Kermani

Research Center for Environmental Health Technology AND Department of Environmental HealthEngineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran