Trace analysis of volatile N-nitroso compounds by combined gas chromatography and thermal energy analysis.

Thermal energy analysis (TEA) has been combined with gas chromatography (GC). The new GC-TEA technique is highly specific to compounds which contain heat labile nitrosyl groups. Because of the specificity of the technique, full use may be made of the TEA sensitivity. Analysis by direct injection of solutions containing less than 1 ng/ml N-nitroso compound is demonstrated.