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  • 1 Institute of Stable Isotopes P. O. Box 243 Cluj (Roumania)
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Abstract  

The rate of the15N/14N isotopic exchange between NO−HNO3 at high nitric acid concentration (2–10M) have been measured. The experimental data were obtained by contacting nitric oxide at atmospheric pressure with nitric acid solution labelled with15N, in a glass contactor.