Bulletin of the American Physical Society
2024 APS March Meeting
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session LL03: V: Progress in AMO Physics I
4:00 PM–6:00 PM,
Wednesday, March 6, 2024
Room: Virtual Room 03
Sponsoring
Unit:
DAMOP
Chair: Rimsha Shaikh, NED University of Engineering and Technology
Abstract: LL03.00010 : Optically levitated single droplet study of the sea spray aerosol that contains the mercuric halides*
5:48 PM–6:00 PM
Presenter:
YUKAI AI
(Mississippi State University)
Authors:
YUKAI AI
(Mississippi State University)
Chuji Wang
(Mississippi State University)
Gorden Videen
(Army Research Lab)
Yongle Pan
(Army Research Lab)
Optical trapping was demonstrated that can be used to simulate the real atmospheric environment of a single aerosol particle in air. In this study, we used optical trapping-Raman spectroscopy to study the single droplet of the sea spray aerosol that contains Hg(II) halides (HgX2, X=Cl, Br). The single droplets were trapped in air under different conditions (exposure to ozone or UV radiation) with different relative humidities (RH). The results were analyzed by the single particle-Raman spectra. We discussed the results in (1) The equilibrium process and hygroscopic properties of the sea spray aerosol; (2) The chemical reaction that happens between ozone and Hg(II) halides in sea spray aerosol in the single particle level; (3) The influence of the UV radiation on the Hg(II) halides in sea spray aerosol.
*The research reported here was funded in whole or in part by the Army Research Office via grant # W911NF-21-1-0171 to Mississippi State University. Any errors and opinions are not those of the Army Research Office or Department of Defence and are attributable solely to the authors.
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