Iodine oxoacids enhance nucleation of sulfuric acid particles in the atmosphere

• 成果类型: Article
• 署名作者: He, Xu-Cheng; Simon, Mario; Iyer, Siddharth; Xie, Hong-Bin; Roerup, Birte; Shen, Jiali; Finkenzeller, Henning; Stolzenburg, Dominik; Zhang, Rongjie; Baccarini, Andrea; Tham, Yee Jun; Wang, Mingyi; Amanatidis, Stavros; Piedehierro, Ana A.; Amorim, Antonio; Baalbaki, Rima; Brasseur, Zoe; Caudillo, Lucia; Chu, Biwu; Dada, Lubna; Duplissy, Jonathan; El Haddad, Imad; Flagan, Richard C.; Granzin, Manuel; Hansel, Armin; Heinritzi, Martin; Hofbauer, Victoria; Jokinen, Tuija; Kemppainen, Deniz; Kong, Weimeng; Krechmer, Jordan; Kuerten, Andreas; Lamkaddam, Houssni; Lopez, Brandon; Ma, Fangfang; Mahfouz, Naser G. A.; Makhmutov, Vladimir; Manninen, Hanna E.; Marie, Guillaume; Marten, Ruby; Massabo, Dario; Mauldin, Roy L.; Mentler, Bernhard; Onnela, Antti; Petaejae, Tuukka; Pfeifer, Joschka; Philippov, Maxim; Ranjithkumar, Ananth; Rissanen, Matti P.; Schobesberger, Siegfried; Scholz, Wiebke; Schulze, Benjamin; Surdu, Mihnea; Thakur, Roseline C.; Tome, Antonio; Wagner, Andrea C.; Wang, Dongyu; Wang, Yonghong; Weber, Stefan K.; Welti, Andre; Winkler, Paul M.; Zauner-Wieczorek, Marcel; Baltensperger, Urs; Curtius, Joachim; Kurten, Theo; Worsnop, Douglas R.; Volkamer, Rainer; Lehtipalo, Katrianne; Kirkby, Jasper; Donahue, Neil M.; Sipilae, Mikko; Kulmala, Markku
• 署名单位: University of Helsinki; Carnegie Mellon University; Finnish Meteorological Institute; Goethe University Frankfurt; Tampere University; Dalian University of Technology; University of Colorado System; University of Colorado Boulder; University of Colorado System; University of Colorado Boulder; Technische Universitat Wien; Swiss Federal Institutes of Technology Domain; Paul Scherrer Institute; Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne; Sun Yat Sen University; California Institute of Technology; Universidade de Lisboa; Universidade de Lisboa; Chinese Academy of Sciences; Research Center for Eco-Environmental Sciences (RCEES), CAS; University of Helsinki; Helsinki Institute of Physics; University of Innsbruck; Aerodyne Research; Carnegie Mellon University; Russian Academy of Sciences; Russian Academy of Science Lebedev Physical Institute; Moscow Institute of Physics & Technology; European Organization for Nuclear Research (CERN); University of Genoa; Carnegie Mellon University; University of Colorado System; University of Colorado Boulder; UK Research & Innovation (UKRI); Natural Environment Research Council (NERC); NERC British Antarctic Survey; University of Helsinki; University of Eastern Finland; Universidade da Beira Interior; University of Vienna; Carnegie Mellon University; Nanjing University; Beijing University of Chemical Technology
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-11245
• DOI: 10.1126/science.adh2526
• 发表日期: 2023-12-15
• 关键词: methanesulfonic-acid; number concentration; mass-spectrometer; aerosol formation; neutral cluster; size; ion; nm; chemistry; ammonia

摘要

The main nucleating vapor in the atmosphere is thought to be sulfuric acid (H2SO4), stabilized by ammonia (NH3). However, in marine and polar regions, NH3 is generally low, and H2SO4 is frequently found together with iodine oxoacids [HIOx, i.e., iodic acid (HIO3) and iodous acid (HIO2)]. In experiments performed with the CERN CLOUD (Cosmics Leaving OUtdoor Droplets) chamber, we investigated the interplay of H2SO4 and HIOx during atmospheric particle nucleation. We found that HIOx greatly enhances H2SO4(-NH3) nucleation through two different interactions. First, HIO3 strongly binds with H2SO4 in charged clusters so they drive particle nucleation synergistically. Second, HIO2 substitutes for NH3, forming strongly bound H2SO4-HIO2 acid-base pairs in molecular clusters. Global observations imply that HIOx is enhancing H2SO4(-NH3) nucleation rates 10- to 10,000-fold in marine and polar regions.