Atmospheric wet and dry depositions of polycyclic aromatic compounds in a megacity of Southwest China
文献类型：期刊论文
| 作者 | Xia, Weiwei1; Liang, Bo2; Chen, Lin3 ; Zhu, Yunxi1; Gao, Min4; Chen, Jing1; Wang, Fengwen1; Chen, Yang4; Tian, Mi1,5
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| 刊名 | ENVIRONMENTAL RESEARCH
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| 出版日期 | 2022-03-01 |
| 卷号 | 204页码:9 |
| ISSN号 | 0013-9351 |
| 关键词 | PAH derivatives Wet and dry deposition Deposition flux Source apportionment |
| DOI | 10.1016/j.envres.2021.112151 |
| 通讯作者 | Tian, Mi(tianmi628@cqu.edu.cn) |
| 英文摘要 | yThe dry and wet depositions of polycyclic aromatic hydrocarbons (PAHs) and related derivatives have rarely been characterized separately. Parent, oxygenated and nitrated PAHs (PAHs, OPAHs and NPAHs) have been measured in monthly-averaged wet and dry deposition samples collected from January to December 2019 in urban Chongqing. The annual average concentrations of Sigma(17)PAHs, Sigma(9)OPAHs and Sigma 9NPAHs in wet deposition samples were 457 +/- 375, 1311 +/- 1416 and 8.25 +/- 10.2 ng/L, respectively, with significant monthly variations introduced by rainfall and air-borne particle deposition. Most PAHs species were associated with the particulate phase in wet deposition, while OPAHs and NPAHs were mainly distributed in the dissolved phase, probably due to the lower octanol-water partitioning coefficient of N/OPAHs than that of PAHs. Annual deposition fluxes of PAHs, OPAHs and NPAHs in dry deposition were 25264, 25310 and 388 ng/m(2)/yr, respectively, higher than those in wet deposition (9869, 24083 and 207 ng/m(2)/yr). This indicates that PACs, especially PAHs, were removed from the atmosphere mainly via dry deposition. The contributions of wet deposition to total deposited PACs were larger for months with higher precipitation and for PACs with higher molecular weight. Composition pattern and temporal variation results indicated that wet deposition fluxes were mainly affected by precipitationrelated particle deposition and chemical properties (e.g., water solubility), while dry deposition fluxes were affected more by factors such as gas/particle partitioning, particle size distribution and physicochemical properties of PACs. Principle component analysis combined with diagnostic ratios revealed that PACs in atmospheric deposition samples were from vehicle emission (48.6%), coal combustion (13.4%), petrogenic source (5.9%) and secondary formation (32.1%). |
| 资助项目 | National Key Research and Development Program of China[2018YFC0214001] ; National Natural Science Foundation of China[41773148] ; Fundamental Research Funds for the Central Universities[2019CDXYCH0026] ; Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety[2019B030301008] ; Natural Science Foundation of Chongqing[cstc2020jcyj-msxmX0959] |
| WOS研究方向 | Environmental Sciences & Ecology ; Public, Environmental & Occupational Health |
| 语种 | 英语 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| WOS记录号 | WOS:000730300500006 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/14968]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Tian, Mi |
| 作者单位 | 1.Chongqing Univ, Coll Environm & Ecol, Chongqing 400045, Peoples R China 2.Chongqing Acad Metrol & Qual Inspect, Mat Qual Supervis & Inspect Res Ctr, Chongqing 401123, Peoples R China 3.Army Med Univ, Dept Otorhinolaryngol, Hosp 1, Southwest Hosp, Chongqing 400038, Peoples R China 4.Chinese Acad Sci, Res Ctr Atmospher Environm, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 5.Chongqing Univ, Key Lab Three Gorges Reservoir Reg Ecoenvironm, Minist Educ, Chongqing 400045, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xia, Weiwei,Liang, Bo,Chen, Lin,et al. Atmospheric wet and dry depositions of polycyclic aromatic compounds in a megacity of Southwest China[J]. ENVIRONMENTAL RESEARCH,2022,204:9. |
| APA | Xia, Weiwei.,Liang, Bo.,Chen, Lin.,Zhu, Yunxi.,Gao, Min.,...&Tian, Mi.(2022).Atmospheric wet and dry depositions of polycyclic aromatic compounds in a megacity of Southwest China.ENVIRONMENTAL RESEARCH,204,9. |
| MLA | Xia, Weiwei,et al."Atmospheric wet and dry depositions of polycyclic aromatic compounds in a megacity of Southwest China".ENVIRONMENTAL RESEARCH 204(2022):9. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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