A SURVEY ON VARIATIONS OF BTEX AND OZONE FORMATION POTENTIAL IN YAZD CITY AND MAPPING WITH GIS

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MOHAMMADI AMIR; MOKHTARI MEHDI; MIRI MOHAMMAD; ABDOLLAHNEJAD ALI; NEMATI SEPIDEH

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Journal: Studies in Medical Sciences Year:2016 | Volume:27 | Issue:8 Page(s): 650-660

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Title

A SURVEY ON VARIATIONS OF BTEX AND OZONE FORMATION POTENTIAL IN YAZD CITY AND MAPPING WITH GIS

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Keywords

AIR POLLUTIONQ2

AROMATIC HYDROCARBONQ1

BTEXQ1

PHOTOCATALYST O3Q1

CARCINOGENQ1

Abstract

Background & Aims: Today use of unleaded gasoline is increasing in the world which contains abundant amount of aromatic organic CARCINOGENic compounds. This study aims to monitor the temporal and spatial concentration of BTEX volatile organic compounds and ozone formation potential (OFP) in the air of Yazd city.Materials & Methods: This research was carried out at different hours of the morning and evening in the early fall of 2015. Sampling and measurement of benzene - toluene was done according to1501 NIOSH guidelines using active sampling and GC-FID. GIS software was used for zoning.Results: The mean concentration of BTEX in the early morning hours was 130 and 659 (mg/m3) and late in the morning was 159 and 830 (mg/m3), respectively, which indicates an increase in emissions in the last hour’s morning. Also, Toluene to benzene ratio (T/B) obtained 1.3 to 2.1 and 1.2 to 3, which represents benzene and toluene emissions caused by traffic. T/B, xylene to benzene (X/B) and xylene to ethyl benzene (X/EB) Ratio ranges were obtained 1.2 to 2.1, 1 to 4 and 2 to 6.Conclusion: In this study, spatial analysis by GIS software showed the center and south parts of Yazd more polluted than the north part. Also, spatial variations of BTEX and OFP concentrations were more, but the temporal trend obtained less values and Spearman good correlation (0.01>P and 0.89<r) between BTEX values in the early hours of morning and evening confirmed trend of temporal and spatial. Also the street traffic and exhaust emissions from cars and gas stations were identified as the main cause of BTEX emissions.

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APA: Copy

MOHAMMADI, AMIR, MOKHTARI, MEHDI, MIRI, MOHAMMAD, ABDOLLAHNEJAD, ALI, & NEMATI, SEPIDEH. (2016). A SURVEY ON VARIATIONS OF BTEX AND OZONE FORMATION POTENTIAL IN YAZD CITY AND MAPPING WITH GIS. STUDIES IN MEDICAL SCIENCE (THE JOURNAL OF URMIA UNIVERSITY OF MEDICAL SCINCES), 27(8), 650-660. SID. https://sid.ir/paper/64170/en

Vancouver: Copy

MOHAMMADI AMIR, MOKHTARI MEHDI, MIRI MOHAMMAD, ABDOLLAHNEJAD ALI, NEMATI SEPIDEH. A SURVEY ON VARIATIONS OF BTEX AND OZONE FORMATION POTENTIAL IN YAZD CITY AND MAPPING WITH GIS. STUDIES IN MEDICAL SCIENCE (THE JOURNAL OF URMIA UNIVERSITY OF MEDICAL SCINCES)[Internet]. 2016;27(8):650-660. Available from: https://sid.ir/paper/64170/en

IEEE: Copy

AMIR MOHAMMADI, MEHDI MOKHTARI, MOHAMMAD MIRI, ALI ABDOLLAHNEJAD, and SEPIDEH NEMATI, “A SURVEY ON VARIATIONS OF BTEX AND OZONE FORMATION POTENTIAL IN YAZD CITY AND MAPPING WITH GIS,” STUDIES IN MEDICAL SCIENCE (THE JOURNAL OF URMIA UNIVERSITY OF MEDICAL SCINCES), vol. 27, no. 8, pp. 650–660, 2016, [Online]. Available: https://sid.ir/paper/64170/en

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