Urban air pollution and health risks of parent and nitrated polycyclic aromatic hydrocarbons in two megacities, southwest China
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| Názov: | Urban air pollution and health risks of parent and nitrated polycyclic aromatic hydrocarbons in two megacities, southwest China |
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| Autori: | Zhuo, Shaojie, Du, Wei, Shen, Guofeng, Wang, Rui, Pan, Xuelian, Li, Tongchao, Han, Yang, Li, Yungui, Pan, Bo, Peng, Xing, Cheng, Hefa, Wang, Xilong, Shi, Guoliang, Xing, Baoshan, Tao, Shu |
| Prispievatelia: | Shen, GF, Tao, S (reprint author), Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China., Shen, GF (reprint author), US EPA, Natl Risk Management Res Lab, Durham, NC 27709 USA., Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China., Southwest Univ Sci & Technol, Sch Environm & Resources, Mianyang 621010, Peoples R China., Kunming Univ Sci & Technol, Fac Environm Sci & Engn, Kunming 650500, Yunnan, Peoples R China., Nankai Univ, Coll Environm Sci & Engn, Tianjin 300071, Peoples R China., Univ Massachusetts, Stockbridge Sch Agr, Amherst, MA 01003 USA., US EPA, Natl Risk Management Res Lab, Durham, NC 27709 USA. |
| Zdroj: | SCI |
| Informácie o vydavateľovi: | ATMOSPHERIC ENVIRONMENT |
| Rok vydania: | 2017 |
| Zbierka: | Peking University Institutional Repository (PKU IR) / 北京大学机构知识库 |
| Predmety: | Urban air pollution, PAHs, Nitrated PAHs, Southwest China, Non-priority PAHs, Risk assessment, OXY-PAH EMISSIONS, CANCER-RISK, TIBETAN PLATEAU, NORTHERN CHINA, SOURCE APPORTIONMENT, SPATIAL-DISTRIBUTION, ORGANIC POLLUTANTS, SEASONAL-VARIATION, WOOD COMBUSTION, AMBIENT AIR |
| Popis: | Ambient air pollution in China has a significant spatial variation due to the uneven development and different energy structures. This study characterized ambient pollution of parent and nitrated polycyclic aromatic hydrocarbons (PAHs) through a 1-year measurement in two megacities in southwest China where regional PM2.5 levels were considerably lower than other regions. Though the annual average BaP levels in both two cities were below the national standard of 1.0 ng/m(3), however, by taking other PAH5 into account, PAH5 pollution were serious as indicated by high BaP equivalent concentrations (BaPEQ) of 3.8 +/- 2.6 and 4.4 +/- 1.9 ng/m(3), respectively. Risk assessment would be underestimated by nearly an order of magnitude if only using BaP in risk assessment compared to the estimation based on 26 PAHs including 16 priority and 10 non-priority isomers targeted in this study. Estimated incremental lifetime cancer risks (ILCR) were comparable at two cities, at about 330-380 persons per one million, even though the mass concentrations were significantly different. Nitrated PAHs showed distinct temporal and site differences compared to the parent PAHs. High cancer risks due to inhalation exposure of PAHs and their polar derivatives in the low PM2.5-pollution southwest China suggest essential and effective controls on ambient PAHs pollution in the region, and controls should take potential health risks into account instead of solely mass concentration. (C) 2017 Elsevier Ltd. All rights reserved. ; China National Natural Science Foundation [41629101, 41390241, 41301554, 41571130010]; project 111 [B14001] ; SCI(E) ; ARTICLE ; 441-453 ; 166 |
| Druh dokumentu: | journal/newspaper |
| Jazyk: | English |
| Relation: | 1904648; http://hdl.handle.net/20.500.11897/470631; WOS:000411298800040 |
| DOI: | 10.1016/j.atmosenv.2017.07.051 |
| Dostupnosť: | https://hdl.handle.net/20.500.11897/470631 https://doi.org/10.1016/j.atmosenv.2017.07.051 |
| Prístupové číslo: | edsbas.6F6831C |
| Databáza: | BASE |
Nájsť tento článok vo Web of Science | Abstrakt: | Ambient air pollution in China has a significant spatial variation due to the uneven development and different energy structures. This study characterized ambient pollution of parent and nitrated polycyclic aromatic hydrocarbons (PAHs) through a 1-year measurement in two megacities in southwest China where regional PM2.5 levels were considerably lower than other regions. Though the annual average BaP levels in both two cities were below the national standard of 1.0 ng/m(3), however, by taking other PAH5 into account, PAH5 pollution were serious as indicated by high BaP equivalent concentrations (BaPEQ) of 3.8 +/- 2.6 and 4.4 +/- 1.9 ng/m(3), respectively. Risk assessment would be underestimated by nearly an order of magnitude if only using BaP in risk assessment compared to the estimation based on 26 PAHs including 16 priority and 10 non-priority isomers targeted in this study. Estimated incremental lifetime cancer risks (ILCR) were comparable at two cities, at about 330-380 persons per one million, even though the mass concentrations were significantly different. Nitrated PAHs showed distinct temporal and site differences compared to the parent PAHs. High cancer risks due to inhalation exposure of PAHs and their polar derivatives in the low PM2.5-pollution southwest China suggest essential and effective controls on ambient PAHs pollution in the region, and controls should take potential health risks into account instead of solely mass concentration. (C) 2017 Elsevier Ltd. All rights reserved. ; China National Natural Science Foundation [41629101, 41390241, 41301554, 41571130010]; project 111 [B14001] ; SCI(E) ; ARTICLE ; 441-453 ; 166 |
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| DOI: | 10.1016/j.atmosenv.2017.07.051 |