An investigation of time-dependent ozone (O3) concentration using Geographic Information System: a case study in Central of Bangkok, Thailand
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Issued Date
2024-01-01
Resource Type
ISSN
17551307
eISSN
17551315
Scopus ID
2-s2.0-85205391919
Journal Title
IOP Conference Series: Earth and Environmental Science
Volume
1395
Issue
1
Rights Holder(s)
SCOPUS
Bibliographic Citation
IOP Conference Series: Earth and Environmental Science Vol.1395 No.1 (2024)
Suggested Citation
Dharmayasa I.G.N.P., Ko Ko Oo Z., Mon H.Y., Mankong P., Wedagama D.A.T.A., Darmaastawan K. An investigation of time-dependent ozone (O3) concentration using Geographic Information System: a case study in Central of Bangkok, Thailand. IOP Conference Series: Earth and Environmental Science Vol.1395 No.1 (2024). doi:10.1088/1755-1315/1395/1/012043 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/101540
Title
An investigation of time-dependent ozone (O3) concentration using Geographic Information System: a case study in Central of Bangkok, Thailand
Corresponding Author(s)
Other Contributor(s)
Abstract
The World Health Organization (WHO) estimates that approximately 7 million people die each year due to exposure to polluted air. Ground-level ozone is one of the air pollutants that forms as a result of chemical reactions, specifically through photochemical processes. This study utilized GIS to investigate the ozone concentration in 29 districts in Central Bangkok, Thailand, aiming to assess the health risks associated with ozone and compare them with standard values. According to this study, the ozone concentration in the Bangkok area is generally low during the time range of 01:00 - 08:00 and 17:00 - 00:00, while it tends to be high during the daytime (from 9:00 – 16:00). The highest ozone concentration exceeding the defined safe limit (> 100 ppb) for a short duration (1 hour) occurred in Pubpla during the study period. Additionally, some districts, namely Bang Na, Phra Khanong, Suan Luang, Bang Kapi, and Wang Thonglang, experienced ozone concentrations surpassing the average standard limit (>70 ppb) over an 8-hour period. The high ozone concentrations in these areas can be attributed to their dense population. The increased usage of motor vehicles and high temperatures during working hours contribute to the ease of ozone formation at the surface.