Title

Formation of Molecular Chlorine From the Photolysis of Ozone and Aqueous Sea-Salt Particles

Document Type

Article

Publication Date

1-2-1998

Abstract

Halogen atoms from the reactions of sea-salt particles may play a significant role in the marine boundary layer. Reactions of sodium chloride, the major component of sea-salt particles, with nitrogen oxides generate chlorine atom precursors. However, recent studies suggest there is an additional source of chlorine in the marine troposphere. This study shows that molecular chlorine is generated from the photolysis of ozone in the presence of sea-salt particles above their deliquescence point; this process may also occur in the ocean surface layer. Given the global distribution of ozone, this process may provide a global source of chlorine.

Publication Information

© 1998 American Association for the Advancement of Science

Published in final form at:

K. W. Oum, M. J. Lakin, D. O. De Haan, T. Brauers and B. J. Finlayson-Pitts. "Formation of molecular chlorine from the photolysis of ozone and aqueous sea-salt particles." Science, 279 74-77 (2 January 1998).