Isotopic Exchange in the Sonolysis of Aqueous Solutions Containing 14,14N2 and 15,15N2

Article abstract of DOI:10.1021/j100280a104

Water was irradiated with 300-kHz ultrasonic waves under an atmosphere of argon and molecular nitrogen, the nitrogen being a 1/1 mixture of 14,14N2 and 15,15N2.Maximum yields of the nitrogen containing products, 14,15N2, NO2^-, NO3^-, NH3, and N2O, were observed for N2 concentrations between 40 percent and 60 percent in the gas atmosphere.The 14,15N2 yield was almost as large as that of NO2^- + NO3^-, while NH3 and N2O were present in much smaller amounts.The yields of H2O2, H2, and O2 were largest in the absence of N2 and continuously decreased with increasing N2 concentration.It is proposed that isotopic nitrogen exchange is a process accompanying the redox processes between O atoms, OH and H radicals, and nitrogen molecules.