The oil-soft wax fraction of the microcrystalline wax, extracted from the Bombay High crude tank bottom sludge (Indian origin), has been characterized using gas liquid chromatography (GLC), 1 H and 13 C nuclear magnetic resonance (NMR), and gas liquid chromatography−mass spectroscopy (GLC−MS). A series of saturated acyclic isoprenoid hydrocarbons have been identified in this wax. These structures have been confirmed by recording GLC-MS spectra of the oil-soft wax fraction at reduced ionization potentials of 30 and 20 eV and also recording the spectra of two known available standards, namely, pristane and phytane.
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Kumar et al. (2004) studied this question.
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