Characterization of parent and oxygenated-polycyclic aromatic hydrocarbons (PAHs) in Xi'an, China during heating period: An investigation of spatial distribution and transformation | |
Wang, Jingzhi1,2,3; Ho, Steven Sai Hang1,2,4; Huang, Rujin1,2,5; Gao, Meiling6; Liu, Suixin1,2; Zhao, Shuyu1,2; Cao, Junji1,2,7; Wang, Gehui1,2; Shen, Zhenxing7; Han, Yongming1,2 | |
2016-09-01 | |
发表期刊 | CHEMOSPHERE |
卷号 | 159期号:2016页码:367-377 |
文章类型 | Article |
摘要 | Polycyclic aromatic hydrocarbons (PAHs) and its oxygenated derivatives (OPAHs) are toxins in PM2.5. Little information has been known for their transformation in the ambient airs. In this study, PM2.5 samples were collected at 19 sampling sites in Xi'an, China during the heating period, which is classified into: urban residential, university, commercial area, suburban region, and industry. Organic compounds including PAHs, OPAHs, hopanes and cholestanes were quantified. The average of total quantified PAHs and OPAHs concentrations were 196.5 ng/m(3) and 29A ng/m(3), respectively, which were consistent with other northern cities in China. Statistical analyses showed that there were significant differences on the distributions of PAHs between urban and suburban regions. The industry also had distinguishable profiles compared with urban residential and commercial area for OPAHs. The greater diversity of OPAHs than PAHs might be due to different primary emission sources and transformation and degradation pathways. The ratios of OPAHs to the corresponding parent PAHs, including 9-fluorenone/fluorene, anthraquinone/anthracene, benz[alpha]anthracene-7,12-dione/benzo[alpha]anthracene were 6.2, 12.7, and 1.4, respectively, which were much higher than those for the fresh emissions from coal combustion and biomass burning. These prove the importance of secondary formation and transformation of OPAHs in the ambient airs. Biomarkers such as retene, cyclopenta[CD]pyrene and alpha alpha-homohopane were characterized for the source apportionment. With Positive Matrix Factorization (PMF) model analysis, biomass burning was recognized as the most dominant pollution sources for PAHs during the heading period, which accounted for a contribution of 37.1%. Vehicle emission (22.8%) and coal combustion (22.6%) were also contributors in Xi'an. (C) 2016 Elsevier Ltd. All rights reserved. |
关键词 | Pm2.5 Pahs Opahs Transformation Heating Period |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
DOI | 10.1016/j.chemosphere.2016.06.033 |
关键词[WOS] | POSITIVE MATRIX FACTORIZATION ; GAS CHROMATOGRAPHY/MASS SPECTROMETRY ; ATMOSPHERIC PARTICULATE MATTER ; NONPOLAR ORGANIC-COMPOUNDS ; PORT THERMAL-DESORPTION ; SOURCE APPORTIONMENT ; AMBIENT AIR ; N-ALKANES ; VERTICAL-DISTRIBUTION ; SEASONAL-VARIATIONS |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Environmental Sciences & Ecology |
WOS类目 | Environmental Sciences |
WOS记录号 | WOS:000380417800045 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/5668 |
专题 | 粉尘与环境研究室 |
作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian, Peoples R China 3.Shaanxi Normal Univ, Coll Tourism & Environm, Xian, Peoples R China 4.Desert Res Inst, Div Atmospher Sci, Reno, NV USA 5.Paul Scherrer Inst, Lab Atmospher Chem, CH-5232 Villigen, Switzerland 6.Univ Calif Berkeley, Sch Publ Hlth, Environm Hlth Sci Div, 50 Univ Hall 7360, Berkeley, CA 94720 USA 7.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Jingzhi,Ho, Steven Sai Hang,Huang, Rujin,et al. Characterization of parent and oxygenated-polycyclic aromatic hydrocarbons (PAHs) in Xi'an, China during heating period: An investigation of spatial distribution and transformation[J]. CHEMOSPHERE,2016,159(2016):367-377. |
APA | Wang, Jingzhi.,Ho, Steven Sai Hang.,Huang, Rujin.,Gao, Meiling.,Liu, Suixin.,...&Han, Yongming.(2016).Characterization of parent and oxygenated-polycyclic aromatic hydrocarbons (PAHs) in Xi'an, China during heating period: An investigation of spatial distribution and transformation.CHEMOSPHERE,159(2016),367-377. |
MLA | Wang, Jingzhi,et al."Characterization of parent and oxygenated-polycyclic aromatic hydrocarbons (PAHs) in Xi'an, China during heating period: An investigation of spatial distribution and transformation".CHEMOSPHERE 159.2016(2016):367-377. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Characterization of (2022KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 请求全文 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论