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Surface-Active cis-...
Surface-Active cis-Pinonic Acid in Atmospheric Droplets : A Molecular Dynamics Study
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- Li, Xin (author)
- KTH,Teoretisk kemi,Sch Biotechnol, Dept Theoret Chem, Royal Inst Technol, Stockholm, Sweden; China Univ Sci & Technol, Shanghai 200237, Peoples R China
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- Hede, Thomas, 1975- (author)
- Stockholms universitet,Meteorologiska institutionen (MISU)
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- Tu, Yaoquan (author)
- Örebro universitet,Akademin för naturvetenskap och teknik
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- Leck, Caroline (author)
- Stockholms universitet,Meteorologiska institutionen (MISU)
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- Ågren, Hans (author)
- KTH,Teoretisk kemi,Sch Biotechnol, Dept Theoret Chem, Royal Inst Technol, Stockholm, Sweden
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(creator_code:org_t)
- 2010-02-01
- 2010
- English.
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In: The Journal of Physical Chemistry Letters. - Washington, USA : American Chemical Society (ACS). - 1948-7185. ; 1:4, s. 769-773
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Water vapor in the atmosphere can condensate and form cloud droplets when there is a certain amount of humidity and a presence of cloud condensation nuclei, and organic solutes called surfactants can significantly lower the surface tension of water-one of the parameters determining cloud droplet population. We here present a molecular dynamics study of the behavior of cis-pinonic acid, a commonly found organic compound in cloud condensation nuclei, and its effect on the surface tension of water clusters. Specifically, the decrease in surface tension is found to depend on not only the concentration of the organic compound but also the droplet size due to the spontaneous assembly of the surfactant molecules on the droplet surface. This leads to the conclusion that the partitioning of the surfactant between the bulk and surface plays an important role in the behavior of atmospheric aerosol particles and thus in their availability for cloud formation.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
Keyword
- LINEAR CONSTRAINT SOLVER
- PARTICLE MESH EWALD
- COATED NANOAEROSOLS
- AQUEOUS-SOLUTIONS
- ORGANIC-COMPOUNDS
- TENSION
- SIMULATIONS
- NUCLEUS
- LINCS
- Chemistry
- Kemi
- Kemi
- Meteorology
- meteorologi
- atmosfärvetenskap och oceanografi
Publication and Content Type
- ref (subject category)
- art (subject category)
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