Summary
Diaromatics are geochemically significant constituents of crude oils. Their determination is usually achieved by elaborate prefractionation methods, such as medium pressure liquid chromatography and HPLC, prior to capillary gas chromatography. The present contribution describes the quantitative analysis of methylnaphthalenes, ethylnaphthalenes, and dimethylnaphthalenes in selected crude oils by two-dimensional capillary GC. Since the method does not comprise any work-up procedure the determination of geochemical parameters (alkylnaphthalene concentration ratios) is performed on the original, untreated crude oil samples. Accordingly, the analytical results reflect the original composition. The influence by evaporational losses in the laboratory is minimized.
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Schaefer, R.G., Höltkemeier, J. Direct analysis of alkylnaphthalenes in crude oils by two-dimensional capillary gas chromatography. Chromatographia 26, 311–315 (1988). https://doi.org/10.1007/BF02268172
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DOI: https://doi.org/10.1007/BF02268172