Journal of Atmospheric and Environmental Optics ›› 2018, Vol. 13 ›› Issue (5): 355-363.

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Study of Atmospheric Aerosol Nucleation Mechanism by Organic Acid

ZHANG Yang1, WEN Hui1, LIN Xiaoxiao1, CHEN Jiao2   

  1. (1 Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; 2 China Meteorological Administration Training Center Anhui Branch, Hefei 230061, China )
  • Online:2018-09-28 Published:2018-09-28
  • Supported by:

    Supported by National Natural Science Foundation of China (国家自然科学基金,41505114, 41775122, 40605102)

Abstract:

Organic acid have been widely identified as common components in atmospheric particulate matter,which is important for the study of atmospheric aerosol nucleation mechanism. Experimental studies show that organic acids can promote the growth of sulfuric acid-water clusters. The theoretical calculations also show that the interaction of organic acids with sulfuric acid through hydrogen bonds in the presence of organic acids forms heterogeneous clusters, which can promote the formation of clusters by reducing the nucleation barriers to strengthen the formation of new particles. The influence of organic acids on the nucleation process of aerosols is reviewed, and a prospect for the development is given.

Key words: aerosols, new particle formation, organic acid, mechanism of nucleation, cluster

CLC Number: