Atmospheric Photochemical Reactions Inhibited by Iodine

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Science  16 Nov 1962:
Vol. 138, Issue 3542, pp. 831-832
DOI: 10.1126/science.138.3542.831-a


The inhibition by iodine of the atmosphere photochemical reaction of olefin with nitrogen dioxide has been confirmed. The presence of iodine in concentrations comparable to those of the reactants retards the formation of aldehyde, peroxyacetyl nitrate, and aerosol as well as the disappearance of olefin. The reaction of iodine with atomic oxygen may account for this inhibition. A number of other potential inhibitors were found to be ineffective.