Quaternary Nucleation of Iodine and Sulfur Oxoacids in the Marine Atmosphere: Unexpected Role of Methanesulfonic Acid DOI
R. Y. Zhang, Hong‐Bin Xie, Fangfang Ma

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2025, Volume and Issue: 130(8)

Published: April 17, 2025

Abstract Sulfuric acid (SA), methanesulfonic (MSA), iodic (HIO 3 ), and iodous 2 ) are identified as key nucleation precursors can coexist in the marine atmosphere. Here, we investigated potential SA‐MSA‐HIO ‐HIO quaternary mechanism by exploring formation of (SA) w (MSA) x y z (0 ≤ + 3, 1 3) clusters with quantum chemical calculation kinetics modelling. The results indicate that effectively nucleate under atmospheric conditions. rate is up to 7 orders magnitude higher than SA/MSA‐HIO , ternary mechanisms, SA/MSA/HIO binary mechanisms at some specific mainly driven acid‐base reaction base) halogen bonds besides hydrogen bonds, three acids showing both competitive cooperative roles. More importantly, it was found contribution MSA aerosol comparable SA equal concentrations. unexpectedly high attributed its halogen‐bonding capacity SA. This study highlights need consider multicomponent atmosphere for accurate climate projections, may serve important proof weak even coexisting

Language: Английский

Quaternary Nucleation of Iodine and Sulfur Oxoacids in the Marine Atmosphere: Unexpected Role of Methanesulfonic Acid DOI
R. Y. Zhang, Hong‐Bin Xie, Fangfang Ma

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2025, Volume and Issue: 130(8)

Published: April 17, 2025

Abstract Sulfuric acid (SA), methanesulfonic (MSA), iodic (HIO 3 ), and iodous 2 ) are identified as key nucleation precursors can coexist in the marine atmosphere. Here, we investigated potential SA‐MSA‐HIO ‐HIO quaternary mechanism by exploring formation of (SA) w (MSA) x y z (0 ≤ + 3, 1 3) clusters with quantum chemical calculation kinetics modelling. The results indicate that effectively nucleate under atmospheric conditions. rate is up to 7 orders magnitude higher than SA/MSA‐HIO , ternary mechanisms, SA/MSA/HIO binary mechanisms at some specific mainly driven acid‐base reaction base) halogen bonds besides hydrogen bonds, three acids showing both competitive cooperative roles. More importantly, it was found contribution MSA aerosol comparable SA equal concentrations. unexpectedly high attributed its halogen‐bonding capacity SA. This study highlights need consider multicomponent atmosphere for accurate climate projections, may serve important proof weak even coexisting

Language: Английский

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