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Science 14 April 2000:
Vol. 288. no. 5464, p. 285
DOI: 10.1126/science.288.5464.285
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Perspectives

Also see the archival list of Science's Compass: Enhanced Perspectives

ATMOSPHERIC CHEMISTRY:
Enhanced: Meeting at the Interface

John H. Seinfeld

Reactions on or within particles are an important aspect of atmospheric chemistry, but relatively little is known about such processes in the lower parts of the atmosphere. In this Perspective, Seinfeld discusses results by Knipping et al. that shed light on one of the key heterogeneous reactions in the troposphere, that of chlorine release from sea salt particles. It turns out that the surfaces of these particles may play a larger role in their reaction chemistry than previously believed.

The author is in the Department of Chemical Engineering and the Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA. E-mail: seinfeld{at}caltech.edu

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Science. ISSN 0036-8075 (print), 1095-9203 (online)