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Separation of aromatic hydrocarbons using bonded-phase charge-transfer liquid chromatography. [Distillates]

Journal Article · · Anal. Chem.; (United States)
OSTI ID:5716787
Five charge-transfer bonded phases, (triamine)silica (TA), (8-(2,4-dinitroanilino)octyl)silica (DNAO), (8-(2,4,6-trinitroanilino)octyl)silica (TNAO), (3-(2,4-dinitroanilino)propyl)silica (DNAP), and (3-(2,4,6-trinitroanilino)propyl)silica (TNAP), were compared for the compound class high-performance liquid chromatographic separation of aromatic hydrocarbons. The importance of structural and substituent effects on grouping of compounds by ring number was determined by using 85 model compounds typically found in fossil fuels. Although model compound studies predicted few differences between the columns, analysis of three liquid fossil fuel samples showed the DNAP column grouped hydrocarbons most like earlier separations on alumina. Increasing the distance of the charge transfer group from the surface of the silica in the octylnitroaryl columns offered little advantage in grouping hydrocarbons by ring number, but may be of interest for specialized separation techniques. 24 references, 4 figures, 7 tables.
Research Organization:
Bartlesville Energy Technology Center, OK
OSTI ID:
5716787
Journal Information:
Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States); ISSN ANCHA
Country of Publication:
United States
Language:
English

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