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DOI	10.5194/acp-22-6103-2022
	Molecular-level nucleation mechanism of iodic acid and methanesulfonic acid
	Ning, An; Liu, Ling; Ji, Lin; Zhang, Xiuhui
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	6103
结束页码	6114
卷号	22 期号:9 页码:12
英文摘要	Both iodic acid (HIO3, IA) and methanesulfonic acid (CH3S(O)(2)OH, MSA) have been identified by field studies as important precursors of new particle formation (NPF) in marine areas. However, the mechanism of NPF in which IA and MSA are jointly involved is still unclear. Hence, we investigated the IA-MSA nucleation system under different atmospheric conditions and uncovered the corresponding nucleating mechanism at the molecular level for the first time, using a quantum chemical approach and Atmospheric Cluster Dynamics Code (ACDC). The findings show that the pure-IA nucleation rate was much lower than the results of CLOUD (Cosmics Leaving Outdoor Droplets) experiments. MSA can promote IA cluster formation through stabilizing IA via both hydrogen and halogen bonds, especially under conditions with lower temperatures, sparse IA, and rich MSA. However, the nucleation rate of the IA-MSA mechanism is much lower than that of field observations, indicating that the effect of additional nucleation precursors needs to be considered (e.g., H2SO4, HIO2, NH3, and amines). The IA-MSA nucleation mechanism revealed in this study may help to gain insight into the joint effect of marine sulfur- and iodine-containing components on marine NPF.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000792777000001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273152
作者单位	Beijing Institute of Technology; Ministry of Education, China; Capital Normal University
推荐引用方式 GB/T 7714	Ning, An,Liu, Ling,Ji, Lin,et al. Molecular-level nucleation mechanism of iodic acid and methanesulfonic acid[J],2022,22(9):12.
APA	Ning, An,Liu, Ling,Ji, Lin,&Zhang, Xiuhui.(2022).Molecular-level nucleation mechanism of iodic acid and methanesulfonic acid.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(9),12.
MLA	Ning, An,et al."Molecular-level nucleation mechanism of iodic acid and methanesulfonic acid".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.9(2022):12.