2020
DOI: 10.35762/aer.2020.42.3.2
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Characterization of PM2.5–bound Polycyclic Aromatic Hydrocarbons in Chiang Mai, Thailand during Biomass Open Burning Period of 2016

Abstract: Polycyclic aromatic hydrocarbons (PAHs) bounded to ambient fine particles (PM2.5) were determined for enabling health risk assessment and source identification of ambient aerosols. Daily PM2.5 samples (24 h) were collected on quartz fiber filters by using a low volume air sampler (16.7 L min-1) during smoke haze period (March–April 2016) in Chiang Mai, Thailand. An average concentration of PM2.5 (n=54) was 65.3±17.6 μg m-3. The samples were extracted with dichloromethane using ultrasonication prior to PAHs ana… Show more

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Cited by 9 publications
(14 citation statements)
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References 39 publications
(63 reference statements)
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“…Variations follow haze episodes and PM concentrations and diluted mass is 10 to 20x lower during the rainy season. The highest aggregated PAH level in Chiang Mai is 25.87±10 ng/m 3 in 2010, which remains considerably lower than annual variations in ng/m 3 ) (Thepnuan & Chantara, 2020).…”
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confidence: 76%
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“…Variations follow haze episodes and PM concentrations and diluted mass is 10 to 20x lower during the rainy season. The highest aggregated PAH level in Chiang Mai is 25.87±10 ng/m 3 in 2010, which remains considerably lower than annual variations in ng/m 3 ) (Thepnuan & Chantara, 2020).…”
mentioning
confidence: 76%
“…A very large number of publications show, with variable contribution (30 to 70%), that air masses arriving in Chiang Mai from all altitudes (10 to 3000 m) comes from the South-West and ultimately from Mae Hong Son province (Kim Oanh & Leelasakultum, 2011;Sirithian & Thanatrakolsri, 2022) and Myanmar (Kim Oanh & Leelasakultum, 2011;Pani et al, 2016 ;Phairuang et al, 2016;Kiatwatannacharoen et al, 2017 ;Sirimongkonlertkun, 2018a ;Thepnuan et al, 2019;Thepnuan & Chantara, 2020;Chansuebrsri et al, 2021Chansuebrsri et al, , 2022Niampradit et al, 2022;Song et al, 2022a;Sirithian & Thanatrakolsri, 2022) during the peak of haze season. The common interpretation is that these winds passed through coastal Myanmar and various border states (Shan, Kayah, etc.)…”
Section: Transboundarymentioning
confidence: 99%
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“…DNA damage in Chinese hamster lung fibroblasts was associated with high-molecular-weight PAHs [13]. pPAHs pose a human health risk concern as they are distributed in the respirable particle size range; thus, exposure by inhalation is unavoidable [14,15]. The European Commission (EC) currently uses benzo[a]pyrene as a marker for carcinogenic PAHs in ambient air and set a target value of 1 ng m −3 [16], whereas the UK adopted a more stringent standard for an annual average concentration of benzo[a]pyrene of 0.25 ng m −3 [17].…”
Section: Introductionmentioning
confidence: 99%