Methods to study forms of chemical existence of radioactive contaminations in the loop with the dissociating system N2O4 reversible 2NO2 reversible 2NO+O2

The scheme of analysis of forms of radionuclide existence in the dissociating coolant system is described: mechanical separation and conservation of a sample in a ''dry'' box, gamma spectrometry of the sample for the purpose of establishing nuclide composition of radioactive elements, determining basic forms of chemical stabilization by the methods, non fracturing the sample (X-ray phase one, infrared and Raman spectroscopy), extraction of salts and adducts by organic solvents, separation of oxides, their gamma spectrometry and X-ray phase analysis, concentration in evaporation of organic solvents, obatining infrared and Raman spectra, X-ray phase analysis of the salt residul, thermogravimetric analysis, ion drop analysis