Determination of aromatics and naphthenes in straight run gasoline by 1~H NMR spectroscopy. Part I

摘要

A lH NMR-based method has been developed for determining the composition (aromatics, naphthenes and paraffins) of straight run gasoline fractions. The equations required for the calculations have been derived based on the assignment of the overlapped l~H NMR spectra of the samples with particular emphasis on signals from naphthenes and iso-paraffins. The lH NMR results have been compared with those obtained from GC method. The absolute standard deviations between the NMR and GC methods arel.7 and 2.l/100 for total aromatics and naphthenes, respectively.