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Determination of Gasoline Brands by the Comparison of Infrared Spectra of Polymeric Dispersants
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1998, v.11 no.6, pp.469-473
Kim,
M., Jang,
Y., Jung,
C., &
Lee,
H.
(1998). Determination of Gasoline Brands by the Comparison of Infrared Spectra of Polymeric Dispersants. Analytical Science and Technology, 11(6), 469-473.
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Abstract
The gasoline brands can be determined by gas chromatography. However, determining from the differences in chromatograms is sometimes ambiguous because the gasoline composition is becoming similar from refinery to refinery due to stringent regulations for the protection of the atmospheric environment. To determine the gasoline brands of five refineries in Korea, we have obtained and compared IR spectra of polymeric dispersants which are added to gasoline at several hundreds of ppm levels. Since the deposit control additives used by the five refineries in Korea are different from one another, it is possible to determine the gasoline brands by comparing their IR spectra. A strong and broad C-O stretch absorption peak appears at <TEX>$1,096cm^{-1}$</TEX> for the additives used by A, B, and C refineries, which renders an easy differentiation of the additives from those of D and E refineries. The differentiation of all five gasoline brands are possible due to the characteristic vibrations present in each additive.
- keywords
- gasoline additives, deposit-control additives, polymeric dispersant, IR spectra, IR spectroscopy, polyether amine, polyisobutyl amine
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