CONFIRMATORY METHODS FOR THE THERMAL-ENERGY DETERMINATION OF N-NITROSO COMPOUNDS AT TRACE LEVELS

Methods are presented which allow for the rapid and reliable confirmation of N-nitroso compounds as determined by use of the nitrosyl specific thermal energy analyzer. These approaches utilize minor modifications in the normal operation of the analyzer, gas chromatography and high performance liquid chromatography Interfaced with the analyzer, ultraviolet irradiation of the sample, and wet chemical procedures. Comparisons are made between these analyzer associated methods of confirmation, and other approaches for the determination of N-nttroso compounds at trace levels. An overall general scheme is described which allows for the confirmation of nitrosyl analyzer responsive materials as either N-nitroso, X-nltroso (X = C, O) or X-nitro (X = N, C, O). © 1979, American Chemical Society. All rights reserved.