Journal of Air Pollution and Health 2017. 2(1):.

Amirreza Talaiekhozani, Omid Ghaffarpassand, Mohammad Reza Talaei, Neda Neshat, Behnam Eydivandi


Introduction: For many years, the historical city of Isfahan in the center of Iran has been faced with heavy transportation traffic. This heavy transportation is introducing large amounts of air pollutants into the city, causing many risks to human health, environment, etc. This study evaluates the fuel-based emission inventory of NOx, SOx, HCs and CO released into the atmosphere of Isfahan by both trains and airplanes. In addition, the emission inventory of PM10, PM2.5 and volatile organic compounds were investigated for Isfahan trains.


Materials and methods: The validated methods of the United States Environmental Protection Agency and the European Environmental Agency have been utilized to estimate the emission inventories of trains and airplanes in Isfahan metropolitan. Both methods are based on average emission factors.


Results: The results in 2016 show that, an average of 13,297 tons NOx, 0.13 tons SOx, 691 tons HC, 727 tons VOCs, 329 tons PM10, 319 tons PM2.5 and 1374 tons CO were released into the atmosphere of Isfahan metropolitan by trains every year. Investigations of the airplane emission inventory show that in 2016, an average of 8,076 tons CO2, 3.8 tons HC, 19.4 NOx, 22.8 tons CO and 2.54 tons SOx are released annually into the atmosphere by airplanes in Isfahan metropolitan.


Conclusions: It is concluded that the most important pollutants emitted from railroad systems in Isfahan are nitrogen oxides. Sepahan-Shar suburb, in the southern part of Isfahan, receives the majority of generated pollutants by passing trains. At the present time aircraft are not an effective sources of pollutants in Isfahan.


Emission inventory; air pollutant dispersion; air transportation; train transportation

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Chow JC. Diesel engines: Environmental impact and

control. Journal of the Air & Waste Management Association.


Jia C, Mao X, Huang T, Liang X, Wang Y, Shen Y, et al.

Non-methane hydrocarbons (NMHCs) and their contribution

to ozone formation potential in a petrochemical

industrialized city, Northwest China. Atmospheric Research.


Wang F, Li Z, Zhang K, Di B, Hu B. An overview of

non-road equipment emissions in China. Atmospheric

Environment. 2016;132:283-9.

Talaiekhozani A, Talaei MR, Fulazzaky MA, Bakhsh

HN. Evaluation of contaminated air velocity on the

formaldehyde removal efficiency by using a biotrickling

filter reactor. Journal of Air Pollution and Health.


Zhang C, Wang S, Xing J, Zhao Y, Hao J. Current status

and future projections of NOx emissions from energy

related industries in China. Acta Scientiae Circumstantiae.


Anquandah GA, Sharma VK, Knight DA, Batchu SR,

Gardinali PR. Oxidation of trimethoprim by ferrate

(VI): kinetics, products, and antibacterial activity. Environmental

science & technology. 2011;45(24):10575-

Kean AJ, Sawyer RF, Harley RA. A fuel-based assessment

of off-road diesel engine emissions. Journal of the Air & Waste Management Association.


Talaiekhozani A, Raeatifard N, Jorfi S. Evaluation of

Quality and Quantity of Emitted Gases from Shiraz

Landfill. The 6th National and 1th International Conference

of Applications of Chemistry in Advanced

Technologies; Isfahan, Iran2016.

Gould G, Niemeier D. Review of regional locomotive

emission modeling and the constraints posed by activity

data. Transportation Research Record: Journal of the

Transportation Research Board. 2009(2117):24-32.

FHWA. Freight Facts and Figures 2007: U.S. Department

of Transportation; 2015 [cited 2016 08 November

. Available from:


Transportation: Invest in America Washington,

D.C2002 [cited 2016 08 November 2016]. Available



Facanha C, Horvath A. Evaluation of life-cycle air

emission factors of freight transportation. Environmental

Science & Technology. 2007;41(20):7138-44.

Garshick E, Laden F, Hart JE, Rosner B, Smith TJ,

Dockery DW, et al. Lung cancer in railroad workers exposed

to diesel exhaust. Environmental Health Perspectives.

; 112 (15):1539-43.

EPA. Emission Factors for Locomotives. In: Quality

OoTaA, editor. United States of America: US Environmental

Protection Agency; 2009. p. 1-9.

NIOPDC. Characteristics of diesel fuel of national

Iranian oil products distribution company. Mobin Sarmayeh

Brokerage Co.2016. p. 9.

Winther M, Rypdal K. Civil and military aviation,

EMEP/EEA emission inventory guidebook 2013. In:

Agency EE, editor.: European Environment Agency;

p. 1-50.

de Participantes L. Good practice guidance and uncertainty

management in national greenhouse gas inventories.

Order. 2001.

EPA U. Compilation of Air Pollutant Emission Factors.

Stationary Point and Area Sources. Fifth Edition

(with revisions till January 2011) ed. USA: Environmental

protection agency; 2011.

Chang I-S, Chung C-M, Han S-H. Treatment of oily

wastewater by ultrafiltration and ozone. Desalination.


ICAO I. Aircraft Engine Emissions Databank. International

Civil Aviation Organization; 2006.

Ghiaseddin M. Air Pollution, Sources, Impacts and

Control. Tehran: Tehran University Medical of Sciences;

Zhang Q, Streets DG, He K, Wang Y, Richter A, Burrows

JP, et al. NOx emission trends for China, 1995–

: The view from the ground and the view from

space. Journal of Geophysical Research: Atmospheres.


Bannikov M, Chattha J. Oxides of nitrogen (NOx) emission levels of diesel engines of switch locomotives.

Proceedings of the Institution of Mechanical Engineers,

Part A: Journal of Power and Energy. 2006;220(5):449-

Poola R, Sekar R. Reduction of NOx and particulate

emissions by using oxygen-enriched combustion air in

a locomotive diesel engine. Journal of Engineering for

Gas Turbines and Power. 2003;125(2):524-33.

EASA. ICAO Aircraft Engine Emissions Databank:

European Aviation Safety Agency; 2016 [cited 2017 02

Feb 2017]. Available from: https://www.easa.europa.


Ebrahimi M, Jahangiri A. Investigation of Mehrabad

airport pollutants on the air quality of Tehran. 2nd

Combustion Conference of Iran; 12 February 2008;

Mashhad, Iran2008.


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