Rapid continuous determination of nitric oxide concentration in exhaust gases.

作者: T. Singh , R. F. Sawyer , E. S. Starkman , L. S. Caretto

DOI: 10.1080/00022470.1968.10469093

关键词: Nitrogen dioxideCombustionContinuous analysisContinuous samplingNitric oxideExhaust emissionUltraviolet absorptionInorganic chemistryChemistryNOx

摘要: The rapid determination of nitric oxide levels in exhaust gases is required both for laboratory studies the emission characteristics combustion engines and routine inspection motor vehicle exhaust. A continuous sampling, analysis method measuring has been demonstrated. Rapid oxidation to nitrogen dioxide obtained through ozonization. Nitrogen concentrations are determined by means an ultraviolet absorption technique. Nitric between 100 5000 ppm have measured response time about 20 seconds obtained. presence unburned hydrocarbons sample adverse effect on results this technique which requires either removal or adjustment ozone concentration.

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