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- W569708910 abstract "The Ligand-exchange chromatography method has been applied to the isolation and characterization of polycyclic aromatic Sulfur heterocycles (PASHs) from aromatic concentrate of 200-400°C distillate fraction of Khafji crude oil. Two fractions were collected. The first fraction (Fr-A) was eluted with hexane, and was found to have 96.1% polycyclic aromatic hydrocarbons (PAHs) and 3.9% PASHs. All the identified PASHs in Fr-A contain thiophene rings in terminal positions. They include benzothiophenes, naphthothiophenes, and phenanthrothiophenes. The second fraction (Fr-B) was eluted with 50% chloroform in hexane and contained only PASHs which in turn were further fractionated by HPLC according to the ring number phenomena into three subfractions. The two-ring, three-ring, and four-ring subfractions included benzothiophenes, dibenzothiophenes, and benzonaphthothiophenes, respectively. Precise identification of most of the isomeric PASHs awaits additional GC and GC-MS analyses" @default.
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- W569708910 date "1991-01-01" @default.
- W569708910 modified "2023-09-26" @default.
- W569708910 title "Isolation and characterization of polycyclic aromatic sulfur heterocycles from 200-400.DEG.C. fraction of Khafji crude oil." @default.
- W569708910 cites W181971182 @default.
- W569708910 doi "https://doi.org/10.1627/jpi1958.34.81" @default.
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