Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Henderson James Cleaves, Daniele Pinti, José Cernicharo Quintanilla, Michel Viso

Ozone

  • Francis AlbaredeEmail author
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27833-4_1142-3

Definition

Ozone, O3, is an important trace constituent of the stratosphere, where it forms the ozone layer. It consists of three atoms of oxygen arranged as an open triangle. Ozone is produced in the three-body reaction O + O2 + M = O3 + M, where M represents a stabilizing molecule (N2 or O2) and O is produced by the photochemical dissociation of O2. Some other components (NO, Cl, CFCs) catalyze the reaction of ozone destruction O3 + O = 2O2. The importance of ozone for life preservation lies in its unique capability to block solar UV radiation in a range particularly harmful to organic macromolecules (230–290 nm). It is also a greenhouse gas.

See Also

Keywords

Bioorganic Chemistry Open Triangle Ozone Layer Stratospheric Ozone Life Preservation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Ecole Normale Supérieure de LyonLyonFrance