Measurement of atmospheric nanoparticles: Bridging the gap between gas-phase molecules and larger particles

Weigang Wang , Chao Peng , Chenjuan Deng , Ting Lei , Jun Zheng , Jun Zhao , Dongbin Wang , Zhijun Wu , Lin Wang , Yan Chen , Mingyuan Liu , Jingkun Jiang , Anpei Ye , Maofa Ge


Received December 21, 2021,Revised , Accepted March 03, 2022, Available online March 11, 2022

Volume 35,2023,Pages 183-202

Atmospheric nanoparticles are crucial components contributing to fine particulate matter (PM2.5), and therefore have significant effects on visibility, climate, and human health. Due to the unique role of atmospheric nanoparticles during the evolution process from gas-phase molecules to larger particles, a number of sophisticated experimental techniques have been developed and employed for online monitoring and characterization of the physical and chemical properties of atmospheric nanoparticles, helping us to better understand the formation and growth of new particles. In this paper, we firstly review these state-of-the-art techniques for investigating the formation and growth of atmospheric nanoparticles (e.g., the gas-phase precursor species, molecular clusters, physicochemical properties, and chemical composition). Secondly, we present findings from recent field studies on the formation and growth of atmospheric nanoparticles, utilizing several advanced techniques. Furthermore, perspectives are proposed for technique development and improvements in measuring atmospheric nanoparticles.

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