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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
Source PublicationATMOSPHERIC CHEMISTRY AND PHYSICS
Volume13Issue:22Pages:11535-11549
Subtype期刊论文
Abstract

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).

DOI10.5194/acp-13-11535-2013
Indexed BySCI
Language英语
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Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9934
Collection粉尘与环境研究室
Corresponding AuthorWang, GH (Wang, G. H.)[ 1 ]
Affiliation1.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
Recommended Citation
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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