A method to predict the octane number of automobile gasoline containing methyl tert-butyl ether (MTBE) by proton magnetic resonance (PMR) spectrometry was studied. Samples of gasoline whose octane numbers had been identified according to the ASTM standards (commercially available premium
gasoline to which MTBE was added at rates of 7 vol % and 14 vol %) were used in this investigation of the effect of MTBE on the octane number. The findings were utilized to introduce a term regarding MTBE into the previously reported linear regression equation for estimating the octane number
from the PMR spectrum, and the appropriateness of the linear regression equation was assessed. As a result, the MTBE contents in the samples were determined with satisfactory accuracy by using a standard addition method, and a linear regression equation reflecting the effect of MTBE was obtained.
These achievements are reported.
Suzuki Motor Corporation, Hamamatsu-Nishi P.O. Box 1, 432-91 Hamamatsu, Japan 2:
SHOWA SHELL SIKIYU K.K., 2-5 Kasumigaseki 100, Tokyo, Japan
Publication date: October 1, 1992
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The Society publishes the internationally recognized, peer reviewed journal, Applied Spectroscopy, which is available both in print and online. Subscriptions are included with membership or can be purchased by institutional or corporate organizations. Abstracts may be viewed free of charge. Previously published as Bulletin (Society for Applied Spectroscopy)