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Sources and gas-particle partitioning of atmospheric parent, oxygenated, and nitrated polycyclic aromatic hydrocarbons in a humid city in southwest China

文献类型：期刊论文

作者Hu, Huilin1,2; Tian, Mi1,6; Zhang, Leiming4; Yang, Fumo1,3; Peng, Chao1,2; Chen, Yang1; Shi, Guangming3; Yao, Xiaojiang1; Jiang, Changtan5; Wang, Jun5
刊名ATMOSPHERIC ENVIRONMENT
出版日期2019-06-01
卷号206页码:1-10
ISSN号1352-2310
关键词Nitrated PAHs Oxygenated PAHs Source identification Gas/particle partitioning High relative humidity
DOI10.1016/j.atmosenv.2019.02.041
通讯作者Tian, Mi(tianmi@cigit.ac.cn) ; Yang, Fumo(fmyang@scu.edu.cn)
英文摘要Polycyclic aromatic hydrocarbons (PANS) derivatives, such as oxygenated PAHs (OPAHs) and nitrated PAHs (NPAHs), some of which are more toxic and persistent than parent PAHs, have been ubiquitously detected in the environment. Gaseous and particulate PAHs, OPAHs, and NPAHs in the air were measured in an urban environment of Chongqing in southwest China in 2016. Annual average concentrations were 79.9 +/- 40.5 ng/m(3), 93.7 +/- 75.2 ng/m(3) and 1.65 +/- 1.43 ng/m(3) for Sigma(29) PAHs, E-10 OPAHs and Sigma(27) NPAHs, respectively. PAHs had highest level in winter and lowest level in summer while NPAHs and OPAHs showed relatively higher concentrations in summer than spring and autumn, which may be explained by stronger secondary formation of NPAHs and OPAHs in summer. Source apportionment analysis revealed that biomass burning, coal combustion, and petroleum combustion were the main sources for PAHs, while secondary formation, especially in summer, contributed greatly to OPAHs and NPAHs. Gas/particle partition coefficient (logK(P)) of PAHs, OPAHs and NPAHs, calculated from our observation data, was found to correlate well with the corresponding subcooled liquid vapor pressures (logP(L)(0)). The shallower slope of the linear regression between logK(P) and logP(L)(0) for PAHs ( - 0.61 to - 0.52) than OPAHs or NPAHs ( - 2.14 to - 0.73) indicated stronger absorption into the atmospheric particles for PAHs. Three gas/particle partitioning models were evaluated, including the Junger-Pankow adsorption model, the K-OA absorption model, and the Dual octanol-air/soot-air model. Compared to the measured values of particle-bound fractions, model predicted values were in reasonable range for PAHs, but were underestimated for NPAHs and OPAHs, suggesting that other important factors such as the influence of RH should be incorporated in gas/particle partitioning models for less hydrophobic compounds, especially in humid areas.
资助项目National Natural Science Foundation of China[41875162] ; National Natural Science Foundation of China[41773148] ; National Natural Science Foundation of China[41403089] ; National Natural Science Foundation of China[41375123] ; National Key R&D Program of China[2016YFC0200405] ; National Key R&D Program of China[2018YFC0214001] ; Youth Innovation Promotion Association, CAS[2014349]
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000466251600001
源URL[http://119.78.100.138/handle/2HOD01W0/7797]  
专题大气环境研究中心
通讯作者Tian, Mi; Yang, Fumo
作者单位1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Res Ctr Atmospher Environm, Chongqing 400714, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Sichuan Univ, Natl Engn Res Ctr Flue Gas Desulfurizat, Dept Environm Sci & Engn, Chengdu 610065, Sichuan, Peoples R China
4.Environm & Climate Change Canada, Sci & Technol Branch, Air Qual Res Div, Toronto, ON M3H 5T4, Canada
5.Chongqing Environm Monitoring Ctr, Chongqing 401147, Peoples R China
6.Chongqing Univ, Sch Urban Construct & Environm Engn, Chongqing 400044, Peoples R China
推荐引用方式
GB/T 7714		 Hu, Huilin,Tian, Mi,Zhang, Leiming,et al. Sources and gas-particle partitioning of atmospheric parent, oxygenated, and nitrated polycyclic aromatic hydrocarbons in a humid city in southwest China[J]. ATMOSPHERIC ENVIRONMENT,2019,206:1-10.
APA Hu, Huilin.,Tian, Mi.,Zhang, Leiming.,Yang, Fumo.,Peng, Chao.,...&Wang, Jun.(2019).Sources and gas-particle partitioning of atmospheric parent, oxygenated, and nitrated polycyclic aromatic hydrocarbons in a humid city in southwest China.ATMOSPHERIC ENVIRONMENT,206,1-10.
MLA Hu, Huilin,et al."Sources and gas-particle partitioning of atmospheric parent, oxygenated, and nitrated polycyclic aromatic hydrocarbons in a humid city in southwest China".ATMOSPHERIC ENVIRONMENT 206(2019):1-10.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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