Laboratory evaluation of a novel thermal dissociation chemiluminescence method for in situ detection of nitrous acid

Abstract We describe a new laboratory-based method for in situ detection of nitrous acid (HONO) using a combination of thermal dissociation (TD) and chemiluminescent (CL) detection of nitric oxide. A prototype was built using a commercial NO sensor. Laboratory tests for possible chemical interferences show that measurements are affected in predictable ways by NO 2 , peroxy nitrates, alkyl nitrates, HNO 3 , O 3 and H 2 O .

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