Fast radiochemcial separation during gamma activation analysis. Determination of oxygen, nitrogen and carbon impurities in salts and alloys

For gamma activation analysis of thallium bromide, optical KCl, aluminium-magnesium-lithium alloy and cadmium-mercury-tellurium three-component complex rapid methods of isolation of 11C, 13N, 15O radionuclides, formed by (γ,n)- and (D,n)-reactions based on carbon oxidation by barium iodate or nitrate at 650 deg C, on interaction of oxygen and nitrogen with graphite at 2200 deg C, on nitrogen and carbon reduction by atomic hydrogen, were developed. The method detection limit is 5x10-5% of oxygen and 1x10-5% of nitrogen and carbon. 3 refs.; 3 figs