气候变化领域集成服务门户(CCPortal): Liquid-liquid phase separation in secondary organic aerosol particles produced from α-pinene ozonolysis and α-pinene photooxidation with/without ammonia

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DOI	10.5194/acp-19-9321-2019
	Liquid-liquid phase separation in secondary organic aerosol particles produced from α-pinene ozonolysis and α-pinene photooxidation with/without ammonia
	Ham S.; Bin Babar Z.; Bong Lee J.; Lim H.-J.; Song M.
发表日期	2019
ISSN	16807316
起始页码	9321
结束页码	9331
卷号	19 期号:14
英文摘要	Recently, liquid-liquid phase separation (LLPS) of secondary organic aerosol (SOA) particles free of inorganic salts has been intensively studied due to the importance of cloud condensation nuclei (CCN) properties. In this study, we investigated LLPS in four different types of SOA particles generated from α-pinene ozonolysis and α-pinene photooxidation in the absence and presence of ammonia (NH3). LLPS was observed in SOA particles produced from α- pinene ozonolysis at ~ 95:8% relative humidity (RH) and α-pinene ozonolysis with NH3 at ~ 95:4%RH. However, LLPS was not observed in SOA particles produced from α-pinene photooxidation and α-pinene photooxidation with NH3. Based on datasets of the average oxygen to carbon elemental ratio (O V C) for different types of SOA particles from this study and from previous studies, there appears to be a relationship between the occurrence of LLPS and the O V C of the SOA particles. When LLPS was observed, the two liquid phases were present up to ~ 100%RH. This result can help more accurately predict the CCN properties of organic aerosol particles. © Author(s) 2019.
语种	英语
scopus关键词	aerosol; ammonia; cloud condensation nucleus; inorganic salt; particulate matter; photooxidation; separation
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/144264
作者单位	Department of Earth and Environmental Sciences, Chonbuk National University, 567 Baekje-daero, Deokjingu, Jeonju-si, Jeollabuk-do, 54896, South Korea; Department of Environmental Engineering, Kyungpook National University, 80 Daehakro, Bukgu, Daegu, 41566, South Korea; Reactor System Safety Research Division, Korea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseonggu, Daejeon, 34057, South Korea
推荐引用方式 GB/T 7714	Ham S.,Bin Babar Z.,Bong Lee J.,et al. Liquid-liquid phase separation in secondary organic aerosol particles produced from α-pinene ozonolysis and α-pinene photooxidation with/without ammonia[J],2019,19(14).
APA	Ham S.,Bin Babar Z.,Bong Lee J.,Lim H.-J.,&Song M..(2019).Liquid-liquid phase separation in secondary organic aerosol particles produced from α-pinene ozonolysis and α-pinene photooxidation with/without ammonia.Atmospheric Chemistry and Physics,19(14).
MLA	Ham S.,et al."Liquid-liquid phase separation in secondary organic aerosol particles produced from α-pinene ozonolysis and α-pinene photooxidation with/without ammonia".Atmospheric Chemistry and Physics 19.14(2019).