气候变化领域集成服务门户(CCPortal): Temperature effects on optical properties and chemical composition of secondary organic aerosol derived from n-dodecane

CCPortal

DOI	10.5194/acp-20-8123-2020
	Temperature effects on optical properties and chemical composition of secondary organic aerosol derived from n-dodecane
	Li J.; Wang W.; Li K.; Zhang W.; Peng C.; Zhou L.; Shi B.; Chen Y.; Liu M.; Li H.; Ge M.
发表日期	2020
ISSN	1680-7316
起始页码	8123
结束页码	8137
卷号	20 期号:13
英文摘要	Environmental temperature plays a vital role in controlling chemical transformations that lead to the formation of secondary organic aerosol (SOA) and ultimately impact the composition and optical properties of the aerosol particles. In this study, we investigated optical properties of n-dodecane SOA under two temperature conditions: 5 and 25 ˜C. It was shown that low-temperature conditions could enhance the real part of the refractive index (RI) of the SOA at wavelengths of 532 and 375 nm. Mass spectrometry analysis revealed that the molecular composition of n-dodecane SOA was significantly modified by temperature: a large amount of oligomers were formed under low-temperature conditions, which led to higher RI values. These findings will help improve our understanding of the chemical composition and optical properties of SOA under different temperature conditions and will provide one possible explanation for the low visibility in suburban areas during winter. © 2020 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	aerosol; alkane; chemical composition; low temperature; mass spectrometry; molecular analysis; optical property; temperature effect
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247659
作者单位	State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; Air Quality Research Division, Environment and Climate Change Canada, Toronto, ON M3H5T4, Canada; College of Architecture and Environment, Sichuan University, Chengdu, China; Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), Villigen, 5232, Switzerland
推荐引用方式 GB/T 7714	Li J.,Wang W.,Li K.,et al. Temperature effects on optical properties and chemical composition of secondary organic aerosol derived from n-dodecane[J],2020,20(13).
APA	Li J..,Wang W..,Li K..,Zhang W..,Peng C..,...&Ge M..(2020).Temperature effects on optical properties and chemical composition of secondary organic aerosol derived from n-dodecane.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(13).
MLA	Li J.,et al."Temperature effects on optical properties and chemical composition of secondary organic aerosol derived from n-dodecane".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.13(2020).