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Profiles, sources and potential exposures of parent, chlorinated and brominated polycyclic aromatic hydrocarbons in haze associated atmosphere
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China.
Institute of Environment and Health, Jianghan University, Wuhan, China.
Vise andre og tillknytning
2017 (engelsk)Inngår i: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 593-594, s. 390-398, artikkel-id S0048-9697(17)30654-XArtikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Profiles, sources and potential exposures of chlorinated and brominated polycyclic aromatic hydrocarbons (ClPAHs and BrPAHs) in haze associated atmosphere remain unclear. Haze events happened frequently during heating period in Beijing provided a typical urban context to investigate the concentrations, profiles, sources and potential exposures of ClPAHs, BrPAHs and their non-halogenated parent compounds (PAHs) in air samples. Average concentrations of PAHs, ClPAHs and BrPAHs during heating periods (with more frequent haze events) were about 3-9 times higher than during non-heating periods. Concentrations of particulate matter (PM)-associated ClPAHs and BrPAHs were higher in heating period than in non-heating period, while for gas-associated ClPAHs and BrPAHs, this distinction was not significant. Congener patterns and congener profiles indicated that with increasing coal combustion during the heating period, concentrations of PAHs and ClPAHs in air were elevated in comparison to the non-heating period. Inhalation of PM-associated PAHs, ClPAHs and BrPAHs accounted for higher exposure than inhalation of gas phase and dermal contact of both gas phase and particulate phase. In this study we found that the particulate phase is the dominant exposure pathway of atmospheric PAHs, ClPAHs and BrPAHs during haze days, which is different from previous studies.

sted, utgiver, år, opplag, sider
Elsevier, 2017. Vol. 593-594, s. 390-398, artikkel-id S0048-9697(17)30654-X
Emneord [en]
Air pollution, Dermal contact, Halogenated PAHs, Haze events, Inhalation risk
HSV kategori
Forskningsprogram
Miljövetenskap
Identifikatorer
URN: urn:nbn:se:oru:diva-57356DOI: 10.1016/j.scitotenv.2017.03.134ISI: 000401201800041PubMedID: 28351807Scopus ID: 2-s2.0-85016052924OAI: oai:DiVA.org:oru-57356DiVA, id: diva2:1097086
Merknad

Funding Agencies:

National Natural Science Foundation of China  91543108  21577148  21361140359 

United Nations Environment Programme  21361140359 

State's Key Project of Research and Development Plan  2016YFC0202500 

Strategic Priority Research Program of the Chinese Academy of Sciences  XDB14020102 

Youth Innovation Promotion Association of the Chinese Academy of Sciences  2016038 

Tilgjengelig fra: 2017-05-22 Laget: 2017-05-22 Sist oppdatert: 2018-01-13bibliografisk kontrollert

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