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Inhalation Exposure of Particulate Matter Inside and Outside an Air- Conditioned Bus Stop at a Roadside Area in Uthai Thani, Thailand |
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| รหัสดีโอไอ | |
| Creator | 1. Opas Pukklin 2. Pajaree Thongsanit |
| Title | Inhalation Exposure of Particulate Matter Inside and Outside an Air- Conditioned Bus Stop at a Roadside Area in Uthai Thani, Thailand |
| Publisher | Thai Society of Higher Education Institutes on Environment |
| Publication Year | 2567 |
| Journal Title | EnvironmentAsia |
| Journal Vol. | 17 |
| Journal No. | 3 |
| Page no. | 28-39 |
| Keyword | PM2.5, PM10, Inhalation exposure assessment, Hazard quotient, Indoor air pollution, Outdoor air pollution, Roadside |
| URL Website | http://www.tshe.org/ea/index.html |
| Website title | EnvironmentAsia |
| ISSN | 1906-1714 |
| Abstract | This study investigates inhalation exposure to particulate matter (PM), particularly PM2.5and PM10, inside and outside an air-conditioned bus stop equipped with designed PM2.5filtration devices located in roadside areas of Uthai Thani, Thailand for the reductionof health impacts on passengers. The research aims to analyze PM concentrations,assess exposure levels, and evaluate associated health risks for bus stop passengers. PMsamples were collected using a PMS7003 PM detector every 2 hours from 6:00 a.m. to6:00 p.m. over three months (June 2022 August 2022). A total of 60 residents livingnear the bus station and Central Stadium participated by answering health questionnairesand providing data on exposure time, frequency, duration, and body weight. Exposureassessments were based on calculations of the average daily intake, and the risk levelswere determined using hazard quotient (HQ) values. The highest daily PM2.5 and PM10concentrations were found on the main road in front of the Central Stadium, measuring58.40 and 64.13 ?g/m3, respectively. Inside the air-conditioned bus stop, PM2.5 exposureranged from 0.00 1.298 ?g/kg-day, as opposed to 2.047 7.026 ?g/kg-day outside.The HQ for PM2.5 inside of the bus stop ranged from 0.00 to 0.26, indicating minimalhealth impact, whereas it ranged from 0.33 to 1.41 at outside, suggesting potential risksbased on exposure factors. Similarly, PM10 exposure inside the bus stop ranged from0.031 1.801 ?g/kg-day, compared with 3.008 9.746 ?g/kg-day outside. HQ valuesfor PM10 ranged from 0.00 to 0.16 inside the bus stop and 0.27 to 0.89 outside, indicatinglow overall health impacts across all measurement points. |
