scholarly journals Liquid-liquid phase separation in aerosol particles: Dependence on O:C, organic functionalities, and compositional complexity

2012 ◽  
Vol 39 (19) ◽  
pp. n/a-n/a ◽  
Author(s):  
M. Song ◽  
C. Marcolli ◽  
U. K. Krieger ◽  
A. Zuend ◽  
T. Peter
Keyword(s):  
Phase Separation ◽  
Liquid Phase ◽  
Aerosol Particles ◽  
Liquid Phase Separation ◽  
Liquid Liquid Phase Separation

Liquid−Liquid Phase Separation in Mixed Organic/Inorganic Aerosol Particles

2009 ◽  
Vol 113 (41) ◽  
pp. 10966-10978 ◽  
Author(s):  
V. Gabriela Ciobanu ◽  
Claudia Marcolli ◽  
Ulrich K. Krieger ◽  
Uwe Weers ◽  
Thomas Peter
Keyword(s):  
Phase Separation ◽  
Liquid Phase ◽  
Aerosol Particles ◽  
Liquid Phase Separation ◽  
Inorganic Aerosol ◽  
Liquid Liquid Phase Separation

scholarly journals Liquid–Liquid Phase Separation in Aerosol Particles: Imaging at the Nanometer Scale

2015 ◽  
Vol 49 (8) ◽  
pp. 4995-5002 ◽  
Author(s):  
Rachel E. O’Brien ◽  
Bingbing Wang ◽  
Stephen T. Kelly ◽  
Nils Lundt ◽  
Yuan You ◽  
...  
Keyword(s):  
Phase Separation ◽  
Liquid Phase ◽  
Aerosol Particles ◽  
Liquid Phase Separation ◽  
Nanometer Scale ◽  
Liquid Liquid Phase Separation

scholarly journals Liquid-liquid phase separation in secondary organic aerosol particles produced from α-pinene ozonolysis and α-pinene photo-oxidation with/without ammonia

2019 ◽  
Author(s):  
Suhan Ham ◽  
Zaeem Bin Babar ◽  
Jaebong Lee ◽  
Hojin Lim ◽  
Mijung Song
Keyword(s):  
Phase Separation ◽  
Liquid Phase ◽  
Secondary Organic Aerosol ◽  
Cloud Condensation Nuclei ◽  
Aerosol Particles ◽  
Organic Aerosol ◽  
Liquid Phase Separation ◽  
Photo Oxidation ◽  
Different Types ◽  
Liquid Liquid Phase Separation

Abstract. Recently, liquid–liquid phase separation (LLPS) of secondary organic aerosol (SOA) particles free of inorganic salts has been intensively studied because of their importance on cloud condensation nuclei (CCN) properties. Herein, we investigated LLPS in four different types of SOA particles generated from α-pinene ozonolysis and α-pinene photo-oxidation in the absence and presence of 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 photo-oxidation and α-pinene photo-oxidation with NH3. With datasets of average oxygen to carbon elemental ratio (O : C) for different types of SOA particles of this study and previous studies, LLPS occurred when the O : C ratio was less than ~ 0.44 and LLPS did not occur when the O : C ratio was greater than ~ 0.40. When LLPS was observed, the two liquid phases were present up to ~ 100 % RH. This result can help to predict more accurate results of CCN properties of organic aerosol particles.

scholarly journals Liquid–liquid phase separation in secondary organic aerosol particles produced from <i>α</i>-pinene ozonolysis and <i>α</i>-pinene photooxidation with/without ammonia

2019 ◽  
Vol 19 (14) ◽  
pp. 9321-9331 ◽  
Author(s):  
Suhan Ham ◽  
Zaeem Bin Babar ◽  
Jae Bong Lee ◽  
Ho-Jin Lim ◽  
Mijung Song
Keyword(s):  
Phase Separation ◽  
Liquid Phase ◽  
Secondary Organic Aerosol ◽  
Cloud Condensation Nuclei ◽  
Aerosol Particles ◽  
Organic Aerosol ◽  
Liquid Phase Separation ◽  
Liquid Phases ◽  
Different Types ◽  
Liquid Liquid Phase Separation

Abstract. 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: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: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.

Phase separation in organic aerosol

2017 ◽  
Vol 46 (24) ◽  
pp. 7694-7705 ◽  
Author(s):  
Miriam Arak Freedman
Keyword(s):  
Phase Separation ◽  
Liquid Phase ◽  
Organic Compounds ◽  
Aerosol Particles ◽  
Organic Aerosol ◽  
Liquid Phase Separation ◽  
Climate Effects ◽  
Liquid Liquid Phase Separation

Liquid–liquid phase separation is prevalent in aerosol particles composed of organic compounds and salts and may impact aerosol climate effects.

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