[Study on distribution of nitrogen compounds in catalytic diesel oil by gas chromatography-atomic emission detector].
The method for the separation and determination of nitrogen compounds in a typical catalytic diesel oil by gas chromatography-atomic emission detector (GC-AED) was established. Seventy-three nitrogen compounds (including aniline, alkyl anilines, quinoline, indole, alkyl indole, carbazole, alkyl carbazole) in the catalytic diesel oil were qualified based on the retention times of some pure nitrogen compounds and the retention indices of nitrogen compounds. Effects of pressures of various reagent gases on peak area of main nitrogen compounds in diesel oil were examined as well. The pressures of reagent gases were optimized. Retention indices of different nitrogen compounds under temperature programmed condition were calculated. Reproducibilities of peak areas of main nitrogen compounds in the catalytic diesel oil were no more than 8.0%. The detection limit for nitrogen was 1.0 mg/L under specific conditions. The linear range was 2.0 - 600 mg/L for each nitrogen compound and correlation coefficient was greater than 0.998. The method can be successfully applied in the determination of nitrogen compounds in different catalytic diesel oils.
Yang
Yongtan
Y
Research Institute of Petroleum Processing, China Petroleum & Chemical Corporation, Beijing 100083, China. yangyt@ripp-sinopec.com
Wang
Zheng
Z
Yang
Haiying
H
Lu
Wanzhen
W
D000814:Aniline Compounds / Q000032:analysis; D002227:Carbazoles / Q000032:analysis; D002384:Catalysis; D002849:Chromatography, Gas / Q000379:methods; D005742:Gasoline / Q000032:analysis*; D017672:Nitrogen Compounds / Q000032:analysis*; D011804:Quinolines / Q000032:analysis; D013054:Spectrophotometry, Atomic / Q000379:methods
D000814:Aniline Compounds; D002227:Carbazoles; D005742:Gasoline; D017672:Nitrogen Compounds; D011804:Quinolines; C041514:carbazole; C037219:quinoline; C023650:aniline