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Determination of nitrogen compound distribution in petroleum by gas chromatography with a thermionic detector. [Hydrocracked recycle oil, light catalytic cycle oils, light vacuum gas oil]

Journal Article · · Anal. Chem.; (United States)
DOI:https://doi.org/10.1021/ac50035a025· OSTI ID:6495258
A selective thermionic nitrogen detector was used in combination with a flame-ionization detector for the gas chromatographic determination of nitrogen compound distribution in light catalytic cycle oil and light vacuum gas oil. Distribution of the dominant nitrogen compound types--pyridines, quinolines, indoles, and carbazoles--was determined by compound type and carbon number in the cycle oil and by boiling point in the vacuum gas oil. Accuracy and precision of the method were judged from analysis of reference blends, comparison to nitrogen distribution obtained by gas chromatography with a microcoulometric detector for a cycle oil, and comparison to distribution obtained from elemental nitrogen analyses of distillation fractions of a light vacuum gas oil. With reference blends, accuracy approached precision--about 3% relative. For gas oils, accuracy was generally about 7 to 8% relative. The analyses particularly demonstrate the feasibility of employing the thermionic detector to determine nitrogen compound distribution by boiling point. 7 figs., 8 tables.
Research Organization:
Standard Oil Co., Naperville, IL
OSTI ID:
6495258
Journal Information:
Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 50:13; ISSN ANCHA
Country of Publication:
United States
Language:
English