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- W2105050907 abstract "Abstract Chromatographic separation of crude oil components has been performed on a 50 m Chrompack Sil 5 fused silica capillary column, temperature programmed from 10 to 300°C. Approximately 70 peaks eluting before n ‐nonane ( n ‐C 9 ) and all normal paraffins to n ‐C 19 were identified by a retention time table. Peak areas were converted to weight % using 1‐heptene as internal standard and relative response factors. Components were divided into boiling range groups from n ‐C 6 to n ‐C 19 . Paraffinic, naphthenic, and aromatic distributions were obtained for the boiling point fractions up to n ‐C 9 . Group average densities and molecular weights were calculated from pure component properties up to n ‐C 9 . Knowing the density and molecular weight as functions of boiling range group to n ‐C 9 , these functions can be extrapolated to n ‐C 19 , based on data and correlations from more than 20 distillations of paraffinic North Sea oils adn condensates. The densities and molecular weights of the C 10 + and the C 20 + residues were calculated to satisfy a balance of weight, volume, and number of moles for the whole sample. Measurements on the residues were used to cross‐evaluate the GC method against distillation. The difference in weight was estimated to be less than ± 0.5% in absolute terms for the C 10 + residue. The corresponding figure for C 20 + was ± 2%. Relatively, calculated densities are within ± 1%, molecular weights within ± 2% compared to direct measurements. Calculations were performed by a BASIC program in a GC interfaced computer." @default.
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- W2105050907 date "1985-10-01" @default.
- W2105050907 modified "2023-10-16" @default.
- W2105050907 title "Distribution of weight, density, and molecular weight in crude oil derived from computerized capillary GC analysis" @default.
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- W2105050907 doi "https://doi.org/10.1002/jhrc.1240081008" @default.
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