Ambient PM<inf>2.5</inf>, polycyclic aromatic hydrocarbons and biomass burning tracer in Mae Sot District, western Thailand

© 2019 Turkish National Committee for Air Pollution Research and Control Levoglucosan, as a biomass tracer, and sixteen polycyclic aromatic hydrocarbons (PAHs) in PM2.5 ambient air samples collected from Tak Province during smoke and non-smoke episodes were analyzed. The average PM2.5, levoglucosan...

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Main Authors: Radshadaporn Janta, Kazuhiko Sekiguchi, Ryosuke Yamaguchi, Khajornsak Sopajaree, Siwatt Pongpiachan, Thaneeya Chetiyanukornkul
Format: Journal
Published: 2020
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/68360
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spelling th-cmuir.6653943832-683602020-04-02T15:26:43Z Ambient PM<inf>2.5</inf>, polycyclic aromatic hydrocarbons and biomass burning tracer in Mae Sot District, western Thailand Radshadaporn Janta Kazuhiko Sekiguchi Ryosuke Yamaguchi Khajornsak Sopajaree Siwatt Pongpiachan Thaneeya Chetiyanukornkul Earth and Planetary Sciences Environmental Science © 2019 Turkish National Committee for Air Pollution Research and Control Levoglucosan, as a biomass tracer, and sixteen polycyclic aromatic hydrocarbons (PAHs) in PM2.5 ambient air samples collected from Tak Province during smoke and non-smoke episodes were analyzed. The average PM2.5, levoglucosan and total PAHs concentrations in the smoke episode were 61.64 ± 22.85, 1.00 ± 0.41 μg/m3 and 6.32 ± 2.26 ng/m3, respectively. This figures were significantly higher than those recorded during the non-episode (13.76 ± 5.58, 0.12 ± 0.03 μg/m3 and 2.59 ± 0.15 ng/m3, respectively). The predominant PAHs proportions were comprised of Phenanthrene and Benzo[ghi]perylene and levoglucosan concentrations revealed a strong correlation with PM2.5 concentrations, which indicated the source of PM2.5 from biomass burning. Toxicity equivalent (TEQBaP) and the mutagenic equivalent (MEQBaP) levels during the smoke episode were significantly higher than those in the non-smoke episode. Furthermore, lifetime lung cancer risk recorded during smoke episode exceeded the acceptable cancer risk that has been recommended by US-EPA. These results suggest that this area was not only exposed to PAHs that originated from traffic combustion, but was also exposed from biomass burning emissions, particularly during biomass burning season when there is an increased risks of cancer and mutation. Although the exposure time in this area is relatively short, the high dose period of exposure occurs repetitively every year. In addition, backward trajectories showed that most of the air mass was generated from western region of Thailand and they were throughout the burning region not only emitted from local areas, but also from outside the country during the smoke episode. 2020-04-02T15:25:32Z 2020-04-02T15:25:32Z 2020-01-01 Journal 13091042 2-s2.0-85074385453 10.1016/j.apr.2019.09.003 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85074385453&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/68360
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Earth and Planetary Sciences
Environmental Science
spellingShingle Earth and Planetary Sciences
Environmental Science
Radshadaporn Janta
Kazuhiko Sekiguchi
Ryosuke Yamaguchi
Khajornsak Sopajaree
Siwatt Pongpiachan
Thaneeya Chetiyanukornkul
Ambient PM<inf>2.5</inf>, polycyclic aromatic hydrocarbons and biomass burning tracer in Mae Sot District, western Thailand
description © 2019 Turkish National Committee for Air Pollution Research and Control Levoglucosan, as a biomass tracer, and sixteen polycyclic aromatic hydrocarbons (PAHs) in PM2.5 ambient air samples collected from Tak Province during smoke and non-smoke episodes were analyzed. The average PM2.5, levoglucosan and total PAHs concentrations in the smoke episode were 61.64 ± 22.85, 1.00 ± 0.41 μg/m3 and 6.32 ± 2.26 ng/m3, respectively. This figures were significantly higher than those recorded during the non-episode (13.76 ± 5.58, 0.12 ± 0.03 μg/m3 and 2.59 ± 0.15 ng/m3, respectively). The predominant PAHs proportions were comprised of Phenanthrene and Benzo[ghi]perylene and levoglucosan concentrations revealed a strong correlation with PM2.5 concentrations, which indicated the source of PM2.5 from biomass burning. Toxicity equivalent (TEQBaP) and the mutagenic equivalent (MEQBaP) levels during the smoke episode were significantly higher than those in the non-smoke episode. Furthermore, lifetime lung cancer risk recorded during smoke episode exceeded the acceptable cancer risk that has been recommended by US-EPA. These results suggest that this area was not only exposed to PAHs that originated from traffic combustion, but was also exposed from biomass burning emissions, particularly during biomass burning season when there is an increased risks of cancer and mutation. Although the exposure time in this area is relatively short, the high dose period of exposure occurs repetitively every year. In addition, backward trajectories showed that most of the air mass was generated from western region of Thailand and they were throughout the burning region not only emitted from local areas, but also from outside the country during the smoke episode.
format Journal
author Radshadaporn Janta
Kazuhiko Sekiguchi
Ryosuke Yamaguchi
Khajornsak Sopajaree
Siwatt Pongpiachan
Thaneeya Chetiyanukornkul
author_facet Radshadaporn Janta
Kazuhiko Sekiguchi
Ryosuke Yamaguchi
Khajornsak Sopajaree
Siwatt Pongpiachan
Thaneeya Chetiyanukornkul
author_sort Radshadaporn Janta
title Ambient PM<inf>2.5</inf>, polycyclic aromatic hydrocarbons and biomass burning tracer in Mae Sot District, western Thailand
title_short Ambient PM<inf>2.5</inf>, polycyclic aromatic hydrocarbons and biomass burning tracer in Mae Sot District, western Thailand
title_full Ambient PM<inf>2.5</inf>, polycyclic aromatic hydrocarbons and biomass burning tracer in Mae Sot District, western Thailand
title_fullStr Ambient PM<inf>2.5</inf>, polycyclic aromatic hydrocarbons and biomass burning tracer in Mae Sot District, western Thailand
title_full_unstemmed Ambient PM<inf>2.5</inf>, polycyclic aromatic hydrocarbons and biomass burning tracer in Mae Sot District, western Thailand
title_sort ambient pm<inf>2.5</inf>, polycyclic aromatic hydrocarbons and biomass burning tracer in mae sot district, western thailand
publishDate 2020
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85074385453&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/68360
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