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IR CAVITY RINGDOWN STUDY OF HOONO FORMATION FROM $OH + NO_{2}$

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/20724

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Title: IR CAVITY RINGDOWN STUDY OF HOONO FORMATION FROM $OH + NO_{2}$
Creators: Nizkorodov, Sergey A.; Bean, Brian D.; Mollner, Andrew K.; Okumura, Mitchio; Sander, S. P.
Issue Date: 2002
Abstract: The reaction of $OH + NO_{2} \rightarrow HNO_{3}$ is a critical sink of $HO_{x}$ and $NO_{x}$ radicals in the atmosphere. The unstable intermediate HOONO has long been proposed as a minor channel. Because HOONO is predicted to be bound by $<20$ kcal/mol, it would thermally decompose to reactants and would not serve as a sink for OH radicals; hence, its formation would reduce the rate of stable nitric acid formation. We report direct detection of this adduct at $3280cm^{-1}$ by IR cavity ring-down spectroscopy in a discharge flow cell, and present a study of its relative yield and significance in the troposphere and stratosphere.
URI: http://hdl.handle.net/1811/20724
Other Identifiers: 2002-WJ-07
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