AVS 53rd International Symposium
    Surface Science Tuesday Sessions
       Session SS2-TuM

Paper SS2-TuM2
Reactions of Ozone with the Constituents of Sea Salt Particles

Tuesday, November 14, 2006, 8:20 am, Room 2004

Session: Water-Surface Interactions
Presenter: M.A. Brown, University of California, Irvine and AirUCI
Authors: M.A. Brown, University of California, Irvine and AirUCI
M.J. Krisch, University of California, Irvine and AirUCI
J.T. Newberg, University of California, Irvine and AirUCI
B.S. Mun, Lawrence Berkeley National Laboratory
J.C. Hemminger, University of California, Irvine and AirUCI
Correspondent: Click to Email
The uptake and then destruction of ozone on the surface of alkali halides is thought to play an important role in the chemistry of the troposphere and is believed to generate gas phase molecular halogens in the atmosphere. We present the results from both lab based UHV XPS and ambient pressure XPS at LBNL Advance Light Source beamline 9.3.2 on the reactive uptake of ozone at both the vapor solid and vapor liquid interfaces of alkali halide salts. Ozone proves to be a strong oxidizer and iodide salts are surface oxidized to iodates. Uptake measurements for both the bromide and chloride salts will also be presented. Through the use of surface imaging techniques at the Molecular Foundry of LBNL insights into the site specificity of the reaction are explored.