Day-Night Differences, Seasonal Variations and Source Apportionment of PM10-Bound PAHs over Xi'an, Northwest China
文献类型：期刊论文
| 作者 | Zeng, Yaling1; Yang, Liu1; Cao, Junji3; Xu, Hongmei1; Lei, Yali1; Zhang, Qian1; Liu, Fobang2; Wang, Xin1,2,3; Shen, Zhenxing1,3 |
| 刊名 | ATMOSPHERE
 |
| 出版日期 | 2018-02-01 |
| 卷号 | 9期号:2页码:1-13 |
| 关键词 | Pm10 Pahs Day-night Difference Seasonal Variation Positive Matrix Factorization Northwest China |
| DOI | 10.3390/atmos9020062 |
| 文献子类 | Article |
| 英文摘要 | Day-night PM10-bound PAHs were studied at an urban site of Xi'an from 20 December 2006 to 28 October 2007. The annual mean concentration of nighttime PAHs (285.0 ng m(-3)) was higher than that in daytime (239.4 ng m(-3)). A significant difference of PAH concentrations between daytime and nighttime was found in autumn with a coefficient of divergence (CD) of 0.23 (significant level 0.2). However, no distinct difference was observed in other seasons (with CD values < 0.2), although the difference of PAHs partition capacity in PM10 between daytime and nighttime was significant in the four seasons. Remarkable seasonal variations were observed in the total PAH levels, with a highest mean concentration of 344.6 ng m(-3) in winter and a lowest mean concentration of 177 ng m(-3) in summer. Positive matrix factorization results revealed that residential emission for heating is the major contributor of the elevated PAH levels in winter, accounting for 49% of the total PAH levels. The coal combustion including industrial and residential usage, contributed over 40% of the PAH emissions in PM10 of Xi'an during the one-year sampling period. These results can provide guidance for taking measures in reducing PAHs levels in the air. |
| WOS关键词 | POLYCYCLIC AROMATIC-HYDROCARBONS ; FINE PARTICULATE MATTER ; CANCER-RISK ASSESSMENT ; URBAN ATMOSPHERE ; CHEMICAL-COMPOSITION ; SPATIAL-DISTRIBUTION ; SIZE DISTRIBUTION ; HUMAN HEALTH ; AEROSOL ; PM2.5 |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000427507000028 |
| 源URL | [http://ir.ieecas.cn/handle/361006/5200]  |
| 专题 | 地球环境研究所_粉尘与环境研究室 |
| 作者单位 | 1.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Shaanxi, Peoples R China 2.Max Planck Inst Chem, Multiphase Chem Dept, D-55128 Mainz, Germany 3.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, Yaling,Yang, Liu,Cao, Junji,et al. Day-Night Differences, Seasonal Variations and Source Apportionment of PM10-Bound PAHs over Xi'an, Northwest China[J]. ATMOSPHERE,2018,9(2):1-13. |
| APA | Zeng, Yaling.,Yang, Liu.,Cao, Junji.,Xu, Hongmei.,Lei, Yali.,...&Shen, Zhenxing.(2018).Day-Night Differences, Seasonal Variations and Source Apportionment of PM10-Bound PAHs over Xi'an, Northwest China.ATMOSPHERE,9(2),1-13. |
| MLA | Zeng, Yaling,et al."Day-Night Differences, Seasonal Variations and Source Apportionment of PM10-Bound PAHs over Xi'an, Northwest China".ATMOSPHERE 9.2(2018):1-13. |
入库方式： OAI收割
来源：地球环境研究所
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