TY - JOUR
T1 - Characteristics and health impacts of PM2.5-bound PCDD/Fs in three Asian countries
AU - Chi, Kai Hsien
AU - Huang, Yu Ting
AU - Nguyen, Hung Minh
AU - Tran, Thi Tuyet Hanh
AU - Chantara, Somporn
AU - Ngo, Tuan Hung
N1 - Publisher Copyright:
© 2022 The Authors
PY - 2022/9
Y1 - 2022/9
N2 - Polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs) were ubiquitous, persistent chemical compounds attached to particulate matter in the atmosphere. We aimed to study the characteristics of these pollutants in atmospheric PM2.5 of three Asian countries, including Taiwan (Taipei), Thailand (Chiang Mai), and Vietnam (Hanoi). We carried out a source apportionment analysis to determine significant PCDD/F contributors in these areas. Multiple media model was conducted to access the health impact assessment. The PM2.5 concentration in Taipei (n = 7), Chiang Mai (n = 20), and Hanoi (n = 10) were 18.4 ± 6.21 μg/m3, 133 ± 49.5 μg/m3, and 88.1 ± 12.6 µg/m3, respectively. The PCDD/Fs level in Hanoi was 92.4 ± 67.3 fg I-TEQ/m3, and in Taipei and Chiang Mai was 5.01 ± 2.39 fg I-TEQ/m3 and 14.4 ± 13.1 fg I-TEQ/m3, respectively, which showed that the higher PM2.5 concentration was not necessary to follow with higher PCDD/Fs level. In all three cities, the effect of traffic on ambient PCDD/F level was significant (23–25 %). However, we also observed the specific sources of PCDD/Fs in each city during the sampling periods, namely long-range transport (Taipei, 55 %), Biomass/open burning (Chiang Mai, 77 %), and industrial activities (Hanoi, 34 %). In the carcinogenic risk estimation, the highest median total carcinogenic risk was in Hanoi (5.87 × 10-6), followed by Chiang Mai (1.06x10-6), and Taipei (2.95 × 10-7). Although diet was the major absorption pathway, the food contributor of exposure differed among the three areas due to the difference in food consumption composition.
AB - Polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs) were ubiquitous, persistent chemical compounds attached to particulate matter in the atmosphere. We aimed to study the characteristics of these pollutants in atmospheric PM2.5 of three Asian countries, including Taiwan (Taipei), Thailand (Chiang Mai), and Vietnam (Hanoi). We carried out a source apportionment analysis to determine significant PCDD/F contributors in these areas. Multiple media model was conducted to access the health impact assessment. The PM2.5 concentration in Taipei (n = 7), Chiang Mai (n = 20), and Hanoi (n = 10) were 18.4 ± 6.21 μg/m3, 133 ± 49.5 μg/m3, and 88.1 ± 12.6 µg/m3, respectively. The PCDD/Fs level in Hanoi was 92.4 ± 67.3 fg I-TEQ/m3, and in Taipei and Chiang Mai was 5.01 ± 2.39 fg I-TEQ/m3 and 14.4 ± 13.1 fg I-TEQ/m3, respectively, which showed that the higher PM2.5 concentration was not necessary to follow with higher PCDD/Fs level. In all three cities, the effect of traffic on ambient PCDD/F level was significant (23–25 %). However, we also observed the specific sources of PCDD/Fs in each city during the sampling periods, namely long-range transport (Taipei, 55 %), Biomass/open burning (Chiang Mai, 77 %), and industrial activities (Hanoi, 34 %). In the carcinogenic risk estimation, the highest median total carcinogenic risk was in Hanoi (5.87 × 10-6), followed by Chiang Mai (1.06x10-6), and Taipei (2.95 × 10-7). Although diet was the major absorption pathway, the food contributor of exposure differed among the three areas due to the difference in food consumption composition.
KW - Carcinogenic risk
KW - PCDD/Fs
KW - PM
KW - Source apportionment
UR - http://www.scopus.com/inward/record.url?scp=85135342684&partnerID=8YFLogxK
U2 - 10.1016/j.envint.2022.107441
DO - 10.1016/j.envint.2022.107441
M3 - Article
C2 - 35926263
AN - SCOPUS:85135342684
SN - 0160-4120
VL - 167
JO - Environment International
JF - Environment International
M1 - 107441
ER -