Observation of biogenic secondary organic aerosols in the atmosphere of a mountain site in central China: temperature and relative humidity effects | |
Li, JJ (Li, J. J.)[ 1 ]; Wang, GH (Wang, G. H.)[ 1 ]; Cao, JJ (Cao, J. J.)[ 1 ]; Wang, XM (Wang, X. M.)[ 2 ]; Zhang, RJ (Zhang, R. J.)[ 3 ] | |
2013-11-28 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
卷号 | 13期号:22页码:11535-11549 |
文章类型 | 期刊论文 |
摘要 | Secondary organic aerosols (SOA) derived from isoprene, pinene and caryophyllene were determined for PM10 and size- segregated (9- stages) aerosols collected at the summit (2060ma. s. l.) of Mt. Hua, central China during the summer of 2009. Estimated concentrations of isoprene, alpha/ beta-pinene and beta-caryophyllene derived secondary organic carbon (SOC) are 81 +/- 53, 29 +/- 14 and 98 +/- 53 ng m(-3), accounting for 2.7 +/- 1.0 %, 0.8 +/- 0.2% and 2.1 +/- 1.0% of OC, respectively. Concentrations of biogenic (BSOA, the isoprene/ pinene/caryophyllene oxidation products) and anthropogenic (ASOA, mainly aromatic acids) SOA positively correlated with temperature (R = 0.57-0.90). However, a decreasing trend of BSOA concentration with an increase in relative humidity (RH) was observed during the sampling period, although a clear trend between ASOA and RH was not found. Based on the AIM Model calculation, we found that during the sampling period an increase in RH resulted in a decrease in the aerosol acidity and thus reduced the effect of acid- catalysis on BSOA formation. There was no significant correlation observed for the BSOA products and anthropogenic parameters (e.g. EC, SO2-4 and NO-3). Size distribution measurements showed that most of the determined BSOA are formed in the aerosol phase and enriched in the fine mode (< 2.1 mu m) except for cis-pinonic acid, which is formed in the gas phase and subsequently partitioned into aerosol phase and thus presents a bimodal pattern with a small peak in the fine mode and a large peak in the coarse mode (> 2.1 mu m). |
DOI | 10.5194/acp-13-11535-2013 |
收录类别 | SCI |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/9934 |
专题 | 粉尘与环境研究室 |
通讯作者 | Wang, GH (Wang, G. H.)[ 1 ] |
作者单位 | 1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences,Xi’an 710075, China; 2.State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences,Guangzhou 510640, China; 3.Key Laboratory of Regional Climate-Environment for Temperate East Asia, Institute of Atmospheric Physics, ChineseAcademy of Sciences, Beijing 100029, China |
推荐引用方式 GB/T 7714 | Li, JJ ,Wang, GH ,Cao, JJ ,et al. Observation of biogenic secondary organic aerosols in the atmosphere of a mountain site in central China: temperature and relative humidity effects[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2013,13(22):11535-11549. |
APA | Li, JJ ,Wang, GH ,Cao, JJ ,Wang, XM ,&Zhang, RJ .(2013).Observation of biogenic secondary organic aerosols in the atmosphere of a mountain site in central China: temperature and relative humidity effects.ATMOSPHERIC CHEMISTRY AND PHYSICS,13(22),11535-11549. |
MLA | Li, JJ ,et al."Observation of biogenic secondary organic aerosols in the atmosphere of a mountain site in central China: temperature and relative humidity effects".ATMOSPHERIC CHEMISTRY AND PHYSICS 13.22(2013):11535-11549. |
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