Destruction of isotopically labeled nitric oxide (/sup 15/N/sup 18/O) in air by corona discharge: kinetics and products of destruction

Summary form only given, as follows. Destruction of isotopically labeled nitric oxide (/sup 15/N/sup 18/O) in air by corona discharge was studied using tubular-flow, coaxial wire, AC-powered dielectric barrier corona discharge reactor coupled with on-line quadrupole mass spectrometer. The kinetics and products of the destruction were determined as functions of specific discharge energy. There has been no direct confirmation of molecular nitrogen production in the process of NO destruction in air by corona discharge due to the overwhelming excess of these molecules in the bath gas. Use of /sup 15/N and /sup 18/O labeled NO allowed to overcome this difficulty. Reduction of NO to molecular nitrogen was clearly demonstrated. The concentration profiles of all nitrogen oxides were measured and compared with model calculations.