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Optical detection of NO<sub>3</sub> and NO<sub>2</sub> in “pure” HNO<sub>3</sub> vapor, the liquid‐phase decomposition of HNO<sub>3</sub>
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Citations
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References
1993
Year
Optical MaterialsEngineeringOptical DetectionAtmospheric PhotochemistryAbsorption SpectroscopyChemistryOptical CharacterizationSpectroscopic PropertyLiquid‐phase DecompositionChemical EngineeringNo 2Optical DiagnosticsOptical PropertiesOptical SensorOptical SystemsOptical SpectroscopyO 2HydrogenOptical SensorsLaser PhotochemistryGas PhaseSpectroscopyNatural SciencesApplied PhysicsChemical Kinetics
Abstract Flowing and static gas‐phase samples of HNO 3 in O 2 and N 2 were analyzed by long‐path ultraviolet/visible (UV/VIS) spectroscopy to reveal the presence of both NO 2 and NO 3 , the concentrations of which were calculated using differential absorption cross sections. NO 2 is produced predominantly by the heterogeneous decomposition of HNO 3 , whereas NO 3 is generated in the gas phase by the thermal decomposition of N 2 O 5 , a product of the self‐disproportionation of liquid HNO 3 . © 1993 John Wiley & Sons, Inc.
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