Day-Night Differences, Seasonal Variations andSource Apportionment of PM10-Bound PAHs overXi’an, Northwest China
文献类型：期刊论文
| 作者 | Yang, L (Yang, Liu)[ 1 ]; Cao, JJ (Cao, Junji)[ 2 ]; Xu, HM (Xu, Hongmei)[ 1 ]; Lei, YL (Lei, Yali)[ 1 ]; Zhang, Q (Zhang, Qian)[ 1 ]; Liu, FB (Liu, Fobang)[ 3 ]; Zeng, YL (Zeng, Yaling)[ 1 ]; Shen, ZX (Shen, Zhenxing)[ 1,2 ]; Wang, X (Wang, Xin)[ 1,2,3 ] |
| 刊名 | atmosphere
 |
| 出版日期 | 2018-02 |
| 卷号 | 9期号:2页码:62 |
| 关键词 | PM10 PAHs day-night difference seasonal variation positive matrix factorization northwest China |
| DOI | 10.3390/atmos9020062 |
| 文献子类 | 期刊论文 |
| 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. |
| 语种 | 英语 |
| 源URL | [http://ir.ieecas.cn/handle/361006/9643]  |
| 专题 | 地球环境研究所_黄土与第四纪地质国家重点实验室（2010~） |
| 作者单位 | 1.Multiphase Chemistry Department, Max Planck Institute for Chemistry, 55128 Mainz, Germany 2.Key Lab of Aerosol Chemistry & Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710049, China; 3.Department of Environmental Sciences and Engineering, Xi’an Jiaotong University, Xi’an 710049, China; |
| 推荐引用方式 GB/T 7714 | Yang, L ,Cao, JJ ,Xu, HM ,et al. Day-Night Differences, Seasonal Variations andSource Apportionment of PM10-Bound PAHs overXi’an, Northwest China[J]. atmosphere,2018,9(2):62. |
| APA | Yang, L .,Cao, JJ .,Xu, HM .,Lei, YL .,Zhang, Q .,...&Wang, X .(2018).Day-Night Differences, Seasonal Variations andSource Apportionment of PM10-Bound PAHs overXi’an, Northwest China.atmosphere,9(2),62. |
| MLA | Yang, L ,et al."Day-Night Differences, Seasonal Variations andSource Apportionment of PM10-Bound PAHs overXi’an, Northwest China".atmosphere 9.2(2018):62. |
入库方式： OAI收割
来源：地球环境研究所
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