Simultaneous determination of carcinogenic PAHs and levoglucosan bound to PM<inf>2.5</inf> for assessment of health risk and pollution sources during a smoke haze period

© 2020 Elsevier Ltd Carcinogenic polycyclic aromatic hydrocarbons (cPAHs) in ambient PM2.5 and a specific molecular marker of biomass burning, levoglucosan, are used to investigate the influence on public health of biomass burning. In this work, we present an effective method for one-time analysis o...

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Main Authors: Duangduean Thepnuan, Nuttipon Yabueng, Somporn Chantara, Tippawan Prapamontol, Ying I. Tsai
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Published: 2020
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/70368
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spelling th-cmuir.6653943832-703682020-10-14T08:35:22Z Simultaneous determination of carcinogenic PAHs and levoglucosan bound to PM<inf>2.5</inf> for assessment of health risk and pollution sources during a smoke haze period Duangduean Thepnuan Nuttipon Yabueng Somporn Chantara Tippawan Prapamontol Ying I. Tsai Chemistry Environmental Science © 2020 Elsevier Ltd Carcinogenic polycyclic aromatic hydrocarbons (cPAHs) in ambient PM2.5 and a specific molecular marker of biomass burning, levoglucosan, are used to investigate the influence on public health of biomass burning. In this work, we present an effective method for one-time analysis of cPAHs and levoglucosan by GC-MS without derivatization. The method was applied for the analysis of PM2.5 samples (64.3 ± 17.6 μg m−3, n = 57) collected during a smoke haze period in Chiang Mai, Thailand. Levoglucosan was analyzed by using both the developed method (GC-MS) and a reference method (HPAEC-PAD) for comparison. Its average concentration obtained from GC-MS (0.31 ± 0.21 μg m−3) was about 4 times less than the concentration obtained from the reference method (1.22 ± 0.76 μg m−3). Therefore, a correcting factor (CF = 4) was used as a multiplying factor, to obtain a comparative value (1.23 ± 0.86 μg m−3). The average concentration of cPAHs found in PM2.5 samples was 5.88 ± 1.97 ng m−3 with the highest value of 10.86 ng m−3 indicating medium to high cancer risk due to PAHs exposure when referring to values of toxicity equivalence and inhalation cancer risk. Diagnostic ratios of BaA/(BaA + CHR) (0.48 ± 0.04) and IND/(IND + BPER) (0.58 ± 0.04) and strong correlations between PM2.5, levoglucosan and cPAHs concentrations implied that the major source of air pollution in the study period was biomass burning. PM2.5 concentration as a pollution indicator was labelled as BB-low, BB-medium, BB-high or BB-extreme; <50, 50–75, 75–100 and > 100 μg m−3, respectively. The levoglucosan and cPAHs concentration during BB-extreme pollution was 4.3 times and 2.34 times, respectively, that during BB-low pollution, and the correlation coefficient (r) between the concentrations of levoglucosan and cPAHs was as high as 0.987, indicating that the more intense the burning of biomass, the higher the carcinogenic risk in the urban air. 2020-10-14T08:28:27Z 2020-10-14T08:28:27Z 2020-10-01 Journal 18791298 00456535 2-s2.0-85085758859 10.1016/j.chemosphere.2020.127154 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85085758859&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/70368
institution Chiang Mai University
building Chiang Mai University Library
continent Asia
country Thailand
Thailand
content_provider Chiang Mai University Library
collection CMU Intellectual Repository
topic Chemistry
Environmental Science
spellingShingle Chemistry
Environmental Science
Duangduean Thepnuan
Nuttipon Yabueng
Somporn Chantara
Tippawan Prapamontol
Ying I. Tsai
Simultaneous determination of carcinogenic PAHs and levoglucosan bound to PM<inf>2.5</inf> for assessment of health risk and pollution sources during a smoke haze period
description © 2020 Elsevier Ltd Carcinogenic polycyclic aromatic hydrocarbons (cPAHs) in ambient PM2.5 and a specific molecular marker of biomass burning, levoglucosan, are used to investigate the influence on public health of biomass burning. In this work, we present an effective method for one-time analysis of cPAHs and levoglucosan by GC-MS without derivatization. The method was applied for the analysis of PM2.5 samples (64.3 ± 17.6 μg m−3, n = 57) collected during a smoke haze period in Chiang Mai, Thailand. Levoglucosan was analyzed by using both the developed method (GC-MS) and a reference method (HPAEC-PAD) for comparison. Its average concentration obtained from GC-MS (0.31 ± 0.21 μg m−3) was about 4 times less than the concentration obtained from the reference method (1.22 ± 0.76 μg m−3). Therefore, a correcting factor (CF = 4) was used as a multiplying factor, to obtain a comparative value (1.23 ± 0.86 μg m−3). The average concentration of cPAHs found in PM2.5 samples was 5.88 ± 1.97 ng m−3 with the highest value of 10.86 ng m−3 indicating medium to high cancer risk due to PAHs exposure when referring to values of toxicity equivalence and inhalation cancer risk. Diagnostic ratios of BaA/(BaA + CHR) (0.48 ± 0.04) and IND/(IND + BPER) (0.58 ± 0.04) and strong correlations between PM2.5, levoglucosan and cPAHs concentrations implied that the major source of air pollution in the study period was biomass burning. PM2.5 concentration as a pollution indicator was labelled as BB-low, BB-medium, BB-high or BB-extreme; <50, 50–75, 75–100 and > 100 μg m−3, respectively. The levoglucosan and cPAHs concentration during BB-extreme pollution was 4.3 times and 2.34 times, respectively, that during BB-low pollution, and the correlation coefficient (r) between the concentrations of levoglucosan and cPAHs was as high as 0.987, indicating that the more intense the burning of biomass, the higher the carcinogenic risk in the urban air.
format Journal
author Duangduean Thepnuan
Nuttipon Yabueng
Somporn Chantara
Tippawan Prapamontol
Ying I. Tsai
author_facet Duangduean Thepnuan
Nuttipon Yabueng
Somporn Chantara
Tippawan Prapamontol
Ying I. Tsai
author_sort Duangduean Thepnuan
title Simultaneous determination of carcinogenic PAHs and levoglucosan bound to PM<inf>2.5</inf> for assessment of health risk and pollution sources during a smoke haze period
title_short Simultaneous determination of carcinogenic PAHs and levoglucosan bound to PM<inf>2.5</inf> for assessment of health risk and pollution sources during a smoke haze period
title_full Simultaneous determination of carcinogenic PAHs and levoglucosan bound to PM<inf>2.5</inf> for assessment of health risk and pollution sources during a smoke haze period
title_fullStr Simultaneous determination of carcinogenic PAHs and levoglucosan bound to PM<inf>2.5</inf> for assessment of health risk and pollution sources during a smoke haze period
title_full_unstemmed Simultaneous determination of carcinogenic PAHs and levoglucosan bound to PM<inf>2.5</inf> for assessment of health risk and pollution sources during a smoke haze period
title_sort simultaneous determination of carcinogenic pahs and levoglucosan bound to pm<inf>2.5</inf> for assessment of health risk and pollution sources during a smoke haze period
publishDate 2020
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85085758859&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/70368
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