A review of experimental techniques for aerosol hygroscopicity studies

Tang, Mingjin; Chan, Chak K.; Li, Yong Jie; Su, Hang; Ma, Qingxin; Wu, Zhijun; Zhang, Guohua; Wang, Zhe; Ge, Maofa; Hu, Min; He, Hong; Wang, Xinming

doi:10.5194/acp-19-12631-2019

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A review of experimental techniques for aerosol hygroscopicity studies

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Su, Hang
Multiphase Chemistry, Max Planck Institute for Chemistry, Max Planck Society;

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引用

Tang, M., Chan, C. K., Li, Y. J., Su, H., Ma, Q., Wu, Z., Zhang, G., Wang, Z., Ge, M., Hu, M., He, H., & Wang, X. (2019). A review of experimental techniques for aerosol hygroscopicity studies. Atmospheric Chemistry and Physics, 19(19), 12631-12686. doi:10.5194/acp-19-12631-2019.

引用: https://hdl.handle.net/21.11116/0000-0006-111C-8

要旨

Hygroscopicity is one of the most important physicochemical properties of aerosol particles and also plays indispensable roles in many other scientific and technical fields. A myriad of experimental techniques, which differ in principles, configurations and cost, are available for investigating aerosol hygroscopicity under subsaturated conditions (i.e., relative humidity below 100 %). A comprehensive review of these techniques is provided in this paper, in which experimental techniques are broadly classified into four categories, according to the way samples under investigation are prepared. For each technique, we describe its operation principle and typical configuration, use representative examples reported in previous work to illustrate how this technique can help better understand aerosol hygroscopicity, and discuss its advantages and disadvantages. In addition, future directions are outlined and discussed for further technical improvement and instrumental development.