Risk Assessment OF BTEX Pollutant (Benzene, Toluene, Ethyl Benzene , Xylene) in Air of the Industrial Zone of Zarghan City (Feb.2012)

Subject Areas : Air Pollution

Nahid  Golestaneh ¹ (M.Sc., Environmental Engineering Department, Islamic Azad Univercity, Estahban Branch, Fars,Iran)
Mohammad Mehdi  Taghizade ² (Assistant Professor, Environmental Engineering Department, Islamic Azad Univercity, Estahban Branch, Fars,Iran ٭(Corresponding Authors))

Received: 2017-01-14 Accepted : 2017-11-22 Published : 2020-07-22

Keywords: Zarghan, Risk Assessment, BETEX,

Abstract :

Background and Objective: Zarghan Industrial Zone (Northeast of Shiraz) is under the influence of various sources of air pollution. In this study, the health risk assessment of permanent residents of Zarghan and the estimation of the incidence of cancer and non-cancerous diseases caused by breathing air contaminated with BTEX, and the results have been compared with similar studies and international standards in this field. Method: Using BTEX measurements from Zarghan air in previous studies, cancer and non-cancer risk assessments have been performed using valid scientific methods (IRIS-USEPA) in permanent residents of Zarghan. Findings:The highest cancer risk of benzene has been calculated in refinery stations (1.61 4 4-10) and Imam Square (5.39 -10 5-10). Also, the highest cancer risk of ethylbenzene was obtained in the stations of Industrial Town 1 (6.47 -10 6-10) and refinery (6.23 -10 6-10). Considering the average concentrations of BTEX in Haydan station inside Zarghan city, the hazard ratio (HQ) for all pollutants in this study, separately and in total (HI) is less than "one".    Discussion and Conclusion: These contaminants in the present concentrations do not pose an obvious non-cancerous risk to the people of Zarghan. The highest cancer risk is related to 3.81 -10 5-10 benzene and 4.32 -10 6-10 -10 ethyl benzene. In order to reduce the risk of cancer to an "acceptable" number for carcinogenic pollutants in this study (benzene, ethylbenzene) according to the WHO (1-10-10) benzene concentration should be from 5.10 g / m3 (mean measured concentration) to g / m3µ 1.34 is reduced.  

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