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DOI | 10.5194/acp-18-12075-2018 |
Liquid-liquid phase separation in organic particles containing one and two organic species: importance of the average O: C | |
Song, Mijung1; Ham, Suhan1; Andrews, Ryan J.2; You, Yuan2; Bertram, Allan K.2 | |
2018-08-22 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:16页码:12075-12084 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea; Canada |
英文摘要 | Recently, experimental studies have shown that liquid-liquid phase separation (LLPS) can occur in organic particles free of inorganic salts. Most of these studies used organic particles consisting of secondary organic materials generated in environmental chambers. To gain additional insight into LLPS in organic particles free of inorganic salts, we studied LLPS in organic particles consisting of one and two commercially available organic species. For particles containing one organic species, three out of the six particle types investigated underwent LLPS. In these cases, LLPS was observed when the O: C was <= 0.44 (but not always) and the relative humidity (RH) was between similar to 97% and similar to 100 %. The mechanism of phase separation was likely nucleation and growth. For particles containing two organic species, 13 out of the 15 particle types investigated underwent LLPS. In these cases, LLPS was observed when the O: C was <= 0.58 (but not always) and mostly when the RH was between similar to 90% RH and similar to 100% RH. The mechanism of phase separation was likely spinodal decomposition. In almost all cases when LLPS was observed (for both one-component and two-component particles), the highest RH at which two liquids was observed was 100 +/- 2.0 %, which has important implications for the cloud condensation nuclei (CCN) properties of these particles. These combined results provide additional evidence that LLPS needs to be considered when predicting the CCN properties of organic particles in the atmosphere. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000442397700005 |
WOS关键词 | ATMOSPHERIC AEROSOL-PARTICLES ; CLOUD DROPLET ACTIVATION ; AMMONIUM-SULFATE ; RELATIVE HUMIDITIES ; INORGANIC SALTS ; CHEMICAL-COMPOSITION ; OPTICAL TWEEZERS ; MIXED PARTICLES ; ICE NUCLEATION ; GAS UPTAKE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/25023 |
专题 | 地球科学 |
作者单位 | 1.Chonbuk Natl Univ, Dept Earth & Environm Sci, Jeollabuk Do, South Korea; 2.Univ British Columbia, Dept Chem, Vancouver, BC V6T 1Z1, Canada |
推荐引用方式 GB/T 7714 | Song, Mijung,Ham, Suhan,Andrews, Ryan J.,et al. Liquid-liquid phase separation in organic particles containing one and two organic species: importance of the average O: C[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(16):12075-12084. |
APA | Song, Mijung,Ham, Suhan,Andrews, Ryan J.,You, Yuan,&Bertram, Allan K..(2018).Liquid-liquid phase separation in organic particles containing one and two organic species: importance of the average O: C.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(16),12075-12084. |
MLA | Song, Mijung,et al."Liquid-liquid phase separation in organic particles containing one and two organic species: importance of the average O: C".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.16(2018):12075-12084. |
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