Investigations of Baseline Air Quality around the Proposed Yangon Outer Ring Road Construction (Eastern Section) Area in Myanmar

doi: 10.14456/mijet.2022.17


  • Shwe Sin Ko Ko Mahidol University
  • Ranjna Jindal Mahidol University
  • Kraichat Tantrakarnapa Mahidol University
  • Nawatch Surinkul Mahidol University
  • Win Trivitayanurak Chulalongkorn University


Air Pollution, air quality, road construction, Yangon Outer Ring Road


Road construction projects are often proposed as a solution to traffic congestion and as well as a means of stimulating economic growth. However, the impact of such schemes on air quality is the problem to be tackled, for which modelled impact predictions are needed prior to any road development project. Yangon Outer Ring Road Construction (YORR) (Eastern Section) is one priority project in the master plan of Greater Yangon Region in Myanmar. This study aimed at investigating the baseline air quality in terms of PM10, PM2.5, NO2 and SO2, in order to predict the expected increased levels arising from the proposed YORR (Eastern Section) project in Myanmar. Continuous air quality measurements of particulate matter (PM10 and PM2.5) and environmental gases: NO2 and SO2 were carried out from 24 January to 2 March 2021 at 5 locations (for 1 week each) around the proposed road construction by using Haz-Scanner Environmental Perimeter Air Station (EPAS). Based on the results, it appears that particulate matter (PM10 and PM2.5) were usually high (36.49- 84.02 µg/m3 and 27.95- 62.32 µg/m3, 34.36- 60.45 µg/m3 and 22.69- 59.49 µg/m3, 15.64- 57.72 µg/m3 and 13.78- 43.84 µg/m3 and 10.20- 53.01 µg/m3 and 8.03- 40.78 µg/m3) at all locations, Point-1, 2, 3 and 4 respectively (except Point-5). So, PM emissions need to be controlled during the proposed YORR (eastern section) project.  SO2 concentrations (20.34 - 32.99 ppb) were found to be within the WHO guideline but slightly higher than NEQG (Myanmar) Guideline on some days at all the Points except Point-4.  NO2 concentrations were found to be within the NEQG (Myanmar) Guideline and WHO standard.


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Author Biographies

Shwe Sin Ko Ko, Mahidol University

Environmental and Water Resources Engineering, Mahidol University, Nakhon Pathom 73170, Thailand

Ranjna Jindal, Mahidol University

Environmental and Water Resources Engineering, Mahidol University, Nakhon Pathom 73170, Thailand

Kraichat Tantrakarnapa, Mahidol University

Department of Social and Environmental Medicine, Faculty of Tropical Medicine, Mahidol University, Thailand

Nawatch Surinkul, Mahidol University

Environmental and Water Resources Engineering, Mahidol University, Nakhon Pathom 73170, Thailand

Win Trivitayanurak, Chulalongkorn University

Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand


Japan International Cooperation Agency (JICA), "Transport Master Plans Unveiled for Myanmar and the Yangon Metropolitan Area," 2014 [online] Available: _01.html

P. Banerjee and M. K. Ghose, "Spatial analysis of environmental impacts of highway projects with special emphasis on mountainous area: an overview," Impact Assessment and Project Appraisal, vol. 34, no. 4, pp.279-293, 2016.

J. S. Evans and D. W. Cooper, 1980. "An inventory of particulate emissions from open sources," Journal of the Air Pollution Control Association; vol. 30, no. 12, pp.298 – 303, 1980 [online] Available: 10465188.

L. Pirjola, T. Ronkko, E. Saukko, H. Parviainen, A. Malinen, J. Alanen and H. Savelje, "Exhaust emissions of non-road mobile machine: Real-world and laboratory studies with diesel and HVO fuels" Fuel, vol. 202, pp. 154–164, 2017.

F. Wang, Z. Li, K. Zhang, B. Di and B. Hu, "An overview of non-road equipment emissions in China" Atmos. Environ., vol. 13, pp. 283–289, 2016.

World Bank Group, "Pollution Prevention and Abatement Handbook: Toward Cleaner Production," 1998.

M. T. H. Ohnamr, H. Yi-Yi, T. S. Than, N. H. Tin, M. A. Myo, A. San and W. San, "Air Quality Monitoring in Selected Sites of Yangon City: a Pilot Study," Myanmar Health Research Congress, pp. 4, 2009.

Toe, A. 2009. Air Quality Assessment in Yangon City; Individual Project Report, Air Pollution Management 2009. Advanced International Training Programme. https://www.researchgate. net/Tor_Aung%20Quality_Assessment_in%20Yangon%20City/html

W. Y. Aung, M. Noguchi, E. P. Y. Ei, Z. Thanta, S. Uchiyama, T. W. S. Tin and N. Kunugita and OhnMar, "Preliminary assessment of outdoor and indoor air quality in Yangon city, Myanmar," Atmospheric Pollution Research, vol. 10, pp. 722–730, 2018.

M. A. Myat, "Beat Air Pollution" on 5 June 2019 [online] Available: beat-air-pollution-june-5.html

Environmental Conservation Department (ECD), "National Environmental Quality (Emission) Guidelines," 2015, [online] Available:

International Finance Corporation (IFC), "Environmental, Health, and Safety Guidelines," Air Emissions and Ambient Air Quality, 2007.

WHO, "Air quality guidelines – global update 2005," [online] Available: publications/aqg2005/en





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