| Day-Night Differences, Seasonal Variations and Source Apportionment of PM10-Bound PAHs over Xi'an, Northwest China | |
| Wang, Xin1,2,3; Shen, Zhenxing1,2; Zeng, Yaling1; Liu, Fobang3; Zhang, Qian1; Lei, Yali1; Xu, Hongmei1; Cao, Junji2; Yang, Liu1 | |
| 2018-02-01 | |
| 发表期刊 | ATMOSPHERE
 |
| 卷号 | 9期号:2页码:1-13 |
| 文章类型 | Article |
| 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. |
| 关键词 | Pm10 Pahs Day-night Difference Seasonal Variation Positive Matrix Factorization Northwest China |
| WOS标题词 | Science & Technology ; Physical Sciences |
| DOI | 10.3390/atmos9020062 |
| 关键词[WOS] | POLYCYCLIC AROMATIC-HYDROCARBONS ; FINE PARTICULATE MATTER ; CANCER-RISK ASSESSMENT ; URBAN ATMOSPHERE ; CHEMICAL-COMPOSITION ; SPATIAL-DISTRIBUTION ; SIZE DISTRIBUTION ; HUMAN HEALTH ; AEROSOL ; PM2.5 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:000427507000028 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/5200 |
| 专题 | 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.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710049, Peoples R China 3.Max Planck Inst Chem, Multiphase Chem Dept, D-55128 Mainz, Germany |
| 推荐引用方式 GB/T 7714 | Wang, Xin,Shen, Zhenxing,Zeng, Yaling,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 | Wang, Xin.,Shen, Zhenxing.,Zeng, Yaling.,Liu, Fobang.,Zhang, Qian.,...&Yang, Liu.(2018).Day-Night Differences, Seasonal Variations and Source Apportionment of PM10-Bound PAHs over Xi'an, Northwest China.ATMOSPHERE,9(2),1-13. |
| MLA | Wang, Xin,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. |
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| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Day-Night Difference（2040KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 请求全文 | |
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