The Optical Properties of Limonene Secondary Organic Aerosols: The Role of NO3, OH, and O-3 in the Oxidation Processes

doi:10.1002/2017JD028090

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	The Optical Properties of Limonene Secondary Organic Aerosols: The Role of NO3, OH, and O-3 in the Oxidation Processes
	Peng, Chao 1,2; Wang, Weigang 1,2; Li, Kun 1,2,3; Li, Junling 1,2; Zhou, Li 1,2,4; Wang, Lingshu 1; Ge, Maofa 1,2,5
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2018-03-27
卷号	123 期号:6 页码:3292-3303
关键词	Optical Properties No3 Limonene Soa
ISSN号	2169-897X
DOI	10.1002/2017JD028090
英文摘要	Limonene, a typical proxy of monoterpenes emitted from biogenic sources, plays an important role in secondary organic aerosol (SOA) formation. However, the optical properties of SOA generated from limonene under various oxidation pathways remain poorly understood. In this study, we investigate the refractive index (RI) of limonene SOA produced from four oxidation conditions with cavity ring-down spectrometer (CRDS) and photoacoustic extinctiometer operated at 532 and 375nm. Our results show that there is a significant difference in RI values of SOA produced from NO3 oxidation compared to other oxidation pathways. The mean values of RI of SOA produced from NO3 oxidation, NOx oxidation, OH oxidation with NOx-free, and O-3 oxidation experiments are 1.578, 1.469, 1.495, and 1.494 at 532nm; and 1.591, 1.527, 1.513, and 1.537 at 375nm, respectively, while no detectable absorption is found in all oxidation conditions. We attribute the high RI values of SOA by NO3 oxidation to two factors: a large proportion of organic nitrates and high-molecular-weight dimers/oligomers in the SOA. Our study results indicate that the nighttime chemistry may significantly influence the optical properties of limonene oxidation products. The RI values of limonene SOA generated under various oxidation conditions at different wavelengths retrieved in our laboratory experiments could help improve the model predictions for evaluating the effect of biogenic SOA on the global radiative forcing as well as climate change.
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000430108900022
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/46013]
专题	中国科学院化学研究所
通讯作者	Wang, Weigang; Ge, Maofa
作者单位	1.Chinese Acad Sci, Inst Chem, CAS Res Educ Ctr Excellence Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Sci, Beijing, Peoples R China 3.Environm & Climate Change Canada, Air Qual Res Div, Toronto, ON, Canada 4.CNRS, Inst Combust Aerotherm Reactivite & Environm OSUC, Orleans, France 5.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen, Peoples R China
推荐引用方式 GB/T 7714	Peng, Chao,Wang, Weigang,Li, Kun,et al. The Optical Properties of Limonene Secondary Organic Aerosols: The Role of NO3, OH, and O-3 in the Oxidation Processes[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(6):3292-3303.
APA	Peng, Chao.,Wang, Weigang.,Li, Kun.,Li, Junling.,Zhou, Li.,...&Ge, Maofa.(2018).The Optical Properties of Limonene Secondary Organic Aerosols: The Role of NO3, OH, and O-3 in the Oxidation Processes.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(6),3292-3303.
MLA	Peng, Chao,et al."The Optical Properties of Limonene Secondary Organic Aerosols: The Role of NO3, OH, and O-3 in the Oxidation Processes".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.6(2018):3292-3303.