Abstract:

The qualitative analysis of the nitrogen compounds in gasoline was carried out by enrichment and identification of mass spectrometry，contrasting the retention times of the standard substances. And the quantitative analysis was conducted by GC-NCD. The detective limit of single nitrogen compound was 0.6 mg/L. The speciation and concentration of nitrogen compounds in the gasoline samples were studied. The nitriles，pyridyl，pyrrolic，aniline nitrogen compounds were identified in catalytic cracking gasoline fractions. Nitrogen compounds from motor gasoline samples were analyzed. The amounts of aniline nitrogen compounds were below 50 mg/L in conventional samples and the amounts of aniline nitrogen compounds were above 100 mg/L in some samples.

Key words: motor gasoline, nitrogen compounds, GC-NCD, GC-MS