Article,

Atmospheric New Particle Formation Enhanced by Organic Acids

, , , , , , , and .
Science (Washington, DC, United States), 304 (5676): 1487--1490 (2004)

Abstract

Atm. aerosols often contain a substantial fraction of org. matter, but the role of org. compds. in new nanometer-sized particle formation is highly uncertain. Lab. expts. show that nucleation of sulfuric acid is considerably enhanced in the presence of arom. acids. Theor. calcns. identify the formation of an unusually stable arom. acid-sulfuric acid complex, which likely leads to a reduced nucleation barrier. The results imply that the interaction between org. and sulfuric acids promotes efficient formation of org. and sulfate aerosols in the polluted atm. because of emissions from burning of fossil fuels, which strongly affect human health and global climate. on SciFinder (R)

Tags

Users

  • @gsmith

Comments and Reviews