Atmospheric New Particle Formation Enhanced by Organic Acids
Renyi ZhangDepartment of Earth, Atmospheric, and Planetary Sciences and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USAInseon SuhDepartment of Atmospheric Sciences, Texas A&M University, College Station, TX 77843, USAJun ZhaoAtmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, CO 80307, USADan ZhangAtmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, CO 80307, USAEdward C. FortnerTexas A&M UniversityXuexi TieAtmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, CO 80307, USAL. T. MolinaDepartment of Earth, Atmospheric and Planetary Sciences and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139 USAMario J. MolinaDepartment of Earth, Atmospheric, and Planetary Sciences and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
2004en
ABI
Annotatsiya
Atmospheric aerosols often contain a substantial fraction of organic matter, but the role of organic compounds in new nanometer-sized particle formation is highly uncertain. Laboratory experiments show that nucleation of sulfuric acid is considerably enhanced in the presence of aromatic acids. Theoretical calculations identify the formation of an unusually stable aromatic acid-sulfuric acid complex, which likely leads to a reduced nucleation barrier. The results imply that the interaction between organic and sulfuric acids promotes efficient formation of organic and sulfate aerosols in the polluted atmosphere because of emissions from burning of fossil fuels, which strongly affect human health and global climate.
Hali tarjima qilinmagan
Identifikatorlar
Iqtiboslar va manbalar
2 ta iqtibos0 ta foydalanilgan manba