English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Particles containing secondary organic material (SOM) are ubiquitous in theatmosphere and play a role in climate and air quality. Recently, researchhas shown that liquid–liquid phase separation (LLPS) occurs at high relativehumidity (RH) (greater than  ∼  95 %) in α-pinene-derivedSOM particles free of inorganic salts, while LLPS does not occur inisoprene-derived SOM particles free of inorganic salts. We expand on thesefindings by investigating LLPS at 290 ± 1 K in SOM particles free ofinorganic salts produced from ozonolysis of β-caryophyllene,ozonolysis of limonene, and photo-oxidation of toluene. LLPS was observed atgreater than  ∼  95 % RH in the biogenic SOM particlesderived from β-caryophyllene and limonene while LLPS was not observedin the anthropogenic SOM particles derived from toluene. This work combinedwith the earlier work on LLPS in SOM particles free of inorganic saltssuggests that the occurrence of LLPS in SOM particles free of inorganicsalts is related to the oxygen-to-carbon elemental ratio (O : C) of theorganic material. These results help explain the difference between thehygroscopic parameter κ of SOM particles measured above and belowwater saturation in the laboratory and field, and have implications forpredicting the cloud condensation nucleation properties of SOM particles

Liquid–liquid phase separation in particles containing secondary organic material free of inorganic salts