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DOI10.5194/acp-20-7359-2020
Enhanced growth rate of atmospheric particles from sulfuric acid
Stolzenburg D.; Stolzenburg D.; Simon M.; Ranjithkumar A.; Kürten A.; Lehtipalo K.; Lehtipalo K.; Gordon H.; Ehrhart S.; Finkenzeller H.; Pichelstorfer L.; Nieminen T.; He X.-C.; Brilke S.; Xiao M.; Amorim A.; Baalbaki R.; Baccarini A.; Beck L.; Bräkling S.; Murillo L.C.; Chen D.; Chu B.; Dada L.; Dias A.; Dommen J.; Duplissy J.; El Haddad I.; Fischer L.; Carracedo L.G.; Heinritzi M.; Kim C.; Kim C.; Koenig T.K.; Kong W.; Lamkaddam H.; Lee C.P.; Leiminger M.; Leiminger M.; Li Z.; Makhmutov V.; Manninen H.E.; Marie G.; Marten R.; Müller T.; Nie W.; Partoll E.; Petäjä T.; Pfeifer J.; Philippov M.; Rissanen M.P.; Rissanen M.P.; Rörup B.; Schobesberger S.; Schuchmann S.; Shen J.; Sipilä M.; Steiner G.; Stozhkov Y.; Tauber C.; Tham Y.J.; Tomé A.; Vazquez-Pufleau M.; Wagner A.C.; Wagner A.C.; Wang M.; Wang Y.; Weber S.K.; Wimmer D.; Wimmer D.; Wlasits P.J.; Wu Y.; Ye Q.; Zauner-Wieczorek M.; Baltensperger U.; Carslaw K.S.; Curtius J.; Donahue N.M.; Flagan R.C.; Hansel A.; Hansel A.; Kulmala M.; Lelieveld J.; Volkamer R.; Kirkby J.; Kirkby J.; Winkler P.M.
发表日期2020
ISSN16807316
起始页码7359
结束页码7372
卷号20期号:12
英文摘要In the present-day atmosphere, sulfuric acid is the most important vapour for aerosol particle formation and initial growth. However, the growth rates of nanoparticles (< 10 nm) from sulfuric acid remain poorly measured. Therefore, the effect of stabilizing bases, the contribution of ions and the impact of attractive forces on molecular collisions are under debate. Here, we present precise growth rate measurements of uncharged sulfuric acid particles from 1.8 to 10 nm, performed under atmospheric conditions in the CERN (European Organization for Nuclear Research) CLOUD chamber. Our results show that the evaporation of sulfuric acid particles above 2 nm is negligible, and growth proceeds kinetically even at low ammonia concentrations. The experimental growth rates exceed the hard-sphere kinetic limit for the condensation of sulfuric acid. We demonstrate that this results from van der Waals forces between the vapour molecules and particles and disentangle it from charge-dipole interactions. The magnitude of the enhancement depends on the assumed particle hydration and collision kinetics but is increasingly important at smaller sizes, resulting in a steep rise in the observed growth rates with decreasing size. Including the experimental results in a global model, we find that the enhanced growth rate of sulfuric acid particles increases the predicted particle number concentrations in the upper free troposphere by more than 50 %. © 2020 Author(s).
关键词aerosolatmospheric chemistryconcentration (composition)evaporationgrowth ratepredictionsulfuric acid
语种英语
来源机构Atmospheric Chemistry and Physics
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/131960
推荐引用方式
GB/T 7714
Stolzenburg D.,Stolzenburg D.,Simon M.,et al. Enhanced growth rate of atmospheric particles from sulfuric acid[J]. Atmospheric Chemistry and Physics,2020,20(12).
APA Stolzenburg D..,Stolzenburg D..,Simon M..,Ranjithkumar A..,Kürten A..,...&Winkler P.M..(2020).Enhanced growth rate of atmospheric particles from sulfuric acid.,20(12).
MLA Stolzenburg D.,et al."Enhanced growth rate of atmospheric particles from sulfuric acid".20.12(2020).
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