| Autor: |
Jason Surratt, Andrew Ault, Cari Dutcher, Joel Thornton, Martin, Scot, William Vizuete, Barbara Turpin, Avram Gold, Havala Pye, Allen Goldstein, Marianne Glasius, Jose Jimenez, Brett Palm, Rodrigo de Souza, Sergio Duvoisin Junior, Stephanie Shaw, Eladio Knipping, Weiwei Hu, Suzanne de Sá, Elianne Alves, Yue Zhao, Sophie Szopa, Cristine Machado, Erickson dos Santos, Rafael e Oliveira, Igor Ribeiro, Caitlin Rose, Sari Budisulistiorini, Eric Edgerton, Mike Fort, Karsten Baumann, Zhenfa Zhang, Tianqu Cui, Hilary Green, Lindsay Yee, Shweta Narayan, Hallie Boyer Chelmo, Nicole Olson, Ziying Lei, Zhang, Yue, Yuzhi Chen, Matthieu Riva |
| Rok vydání: |
2019 |
| DOI: |
10.26434/chemrxiv.7597397 |
| Popis: |
Acid-driven multiphase chemistry of isoprene epoxydiols (IEPOX), a key isoprene oxidation product, with inorganic sulfate aerosol yields substantial amounts of secondary organic aerosol (SOA) through the formation of organosulfur. The extent and implications of inorganic-to-organic sulfate conversion, however, are unknown. Herein, we reveal that extensive consumption of inorganic sulfate occurs, which increases with the IEPOX-to-inorganic sulfate ratio (IEPOX:Sulfinorg), as determined by laboratory and field measurements. We further demonstrate that organosulfur greatly modifies critical aerosol properties, such as acidity, morphology, viscosity, and phase state. These new mechanistic insights reveal that changes in SO2 emissions, especially in isoprene-dominated environments, will significantly alter biogenic SOA physicochemical properties. Consequently, IEPOX:Sulfinorg will play a central role in understanding historical climate and determining future impacts of biogenic SOA on global climate and air quality. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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