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Formation potentiality and source apportionment analysisof secondary organic aerosol in urban and suburban area, Thailand |
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| รหัสดีโอไอ | |
| Creator | 1. Lalidaporn Punya 2. Sarawut Thepanondh 3. Suphaphat Kwonpongsagoon 4. Wanna Laowagul 5. Nuttakit Sukjit 6. Pattaranan Hanma |
| Title | Formation potentiality and source apportionment analysisof secondary organic aerosol in urban and suburban area, Thailand |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2565 |
| Journal Title | Songklanakarin Journal of Science an Technology (SJST) |
| Journal Vol. | 44 |
| Journal No. | 1 |
| Page no. | 191-200 |
| Keyword | volatile organic compound, secondary organic aerosol formation, positive matrix factorization, receptor oriented model, air pollution |
| URL Website | https://rdo.psu.ac.th/sjst/index.php |
| ISSN | 0125-3395 |
| Abstract | Ambient volatile organic compounds (VOCs) concentrations measured in Bangkok and its suburb in Thailand wereestimated for their secondary organic aerosol formation potential (SOAP) to elucidate the major compounds contributing to theformation of secondary fine particulates. VOCs were collected to evacuated canisters and analyzed by Gas Chromatography -Mass Spectrophotometer (GC-MS) in accordance with US-EPA TO15. Measured data from January 2013 to December 2019were used in this study. The results indicate that the top five species of VOCs contributing to SOAP were toluene (66-54%), m-,p-xylene (11-7%), ethylbenzene (9-8%), benzene (12-5%), o-xylene (5-4%) and styrene (9-4%), in rank order. These VOCsaccounted for more than 90 % of total SOAP. Positive Matrix Factorization (PMF) was then used to identify the potentialemission sources of these compounds. The results clearly indicated a high contribution from mobile sources at roadsidemonitoring stations. As for the suburban area, most of the total VOC concentrations were from mobile source emissions,chemical use in the households, and open burning. The results of this study highlight the necessity to control these emissiongroups to reduce the formation potentiality of secondary organic aerosols and PM2.5 pollution. |
