Molecular distribution and seasonal variation of hydrocarbons in PM2.5 from Beijing during 2006
文献类型：期刊论文
| 作者 | Li, Yushan ; Cao, Junji ; Li, Jianjun ; Zhou, Jiamao ; Xu, Hongmei ; Zhang, Renjian ; Ouyang, Zhiyun |
| 刊名 | PARTICUOLOGY
 |
| 出版日期 | 2013 |
| 卷号 | 11期号:1页码:78-85 |
| 通讯作者 | Cao, JJ |
| 中文摘要 | Normal (n)-alkanes and polycyclic aromatic hydrocarbons (PAHs) in PM2.5 were collected from Beijing in 2006 and analyzed using a thermal desorption-GC/MS technique. Annual average concentrations of n-alkanes and PAHs were 282 +/- 96 and 125 +/- 150 ng/m(3), respectively: both were highest in winter and lowest in summer. C-19-C-25 compounds dominated the n-alkanes while benzo[b]fluoranthene, benzo[e]pyrene, and phenanthrene were the most abundant PAHs. The n-alkanes exhibited moderate correlations with organic carbon (OC) and elemental carbon (EC) throughout the year, but the relationships between the PAHs, OC and EC differed between the heating and non-heating seasons. The health risks associated with PAHs in winter were more than 40 times those in spring and summer even though the PM2.5 loadings were comparable. Carbon preference index values (<1.5) indicated that the n-alkanes were mostly from fossil fuel combustion. The ratios of indeno[123-cd]pyrene to benzo[ghi]pyrelene in summer and spring were 0.58 +/- 0.12 and 0.63 +/- 0.09, respectively, suggesting that the PAHs mainly originated from motor vehicles, but higher ratios in winter reflected an increased influence from coal, which is extensively burned for domestic heating. A comprehensive comparison showed that PAH pollution in Beijing has decreased in the past 10 years. (C) 2012 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS记录号 | WOS:000315321300012 |
| 公开日期 | 2014-06-04 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7321]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Li, Yushan,Cao, Junji,Li, Jianjun,et al. Molecular distribution and seasonal variation of hydrocarbons in PM2.5 from Beijing during 2006[J]. PARTICUOLOGY,2013,11(1):78-85. |
| APA | Li, Yushan.,Cao, Junji.,Li, Jianjun.,Zhou, Jiamao.,Xu, Hongmei.,...&Ouyang, Zhiyun.(2013).Molecular distribution and seasonal variation of hydrocarbons in PM2.5 from Beijing during 2006.PARTICUOLOGY,11(1),78-85. |
| MLA | Li, Yushan,et al."Molecular distribution and seasonal variation of hydrocarbons in PM2.5 from Beijing during 2006".PARTICUOLOGY 11.1(2013):78-85. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
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。