Identification of Surface Molecular Hydrates on Solid Sulfuric Acid Films

Suzanne B. Couling, Karen L. Nash, John Fletcher, Alex Henderson, John C. Vickerman, Andrew B. Horn

    Research output: Contribution to journalArticlepeer-review


    Infrared spectroscopic and secondary ion mass spectrometric studies reveal the presence of a stable molecular hydrate on the surface of condensed thin films of ionic sulfuric acid hydrates. This surface species is observed to play a role in the interaction of ammonia, reacting rapidly until the material is depleted. A slower, continuous process is also observed, attributed to a diffusion-limited reaction between incoming NH3 and H3O+ located at or near the surface. Copyright © 2003 American Chemical Society.
    Original languageEnglish
    Pages (from-to)13038-13039
    Number of pages1
    JournalJournal of the American Chemical Society
    Issue number43
    Publication statusPublished - 29 Oct 2003


    • atmospheric particles
    • hydrogen-chloride
    • ice
    • nitrate


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