誘起^1H-核磁気共鳴化学シフトによる石油製品中の芳香族成分の簡易定量

概要

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^1H-NMR chemical shifts of 1,1,2-trichloroethane in various types of aliphatic hydrocarbon solvents (n-types, branched types and cyclic types) and aromatic hydrocarbon solvents (benzene substitution compounds) were measured. In the spectrum of 1,1,2-trichloroethane dissolved in aliphatic hydrocarbons the CH_2 and CH proton signals are approximately constant. On the other hand, in the case of 1,1,2-trichloroethane dissolved in aromatic hydrocarbons, their proton signals were induced at up-field by the magnetic anisotropy effects of aromatic rings. The relationship between the magnitude of the up-field shifts of the protons of 1,1,2-trichloroethane and the concentration of aromatic constituents was discussed in view of the determination of aromatic constituents in petroleum products. The magnitude of up-field shifts of the protons in 1,1,2-trichloroethane is related to the contents of aromatic constituents. Therefore, it was found that the results above-mentioned is applicable to the determination of aromatic constituents in petroleum products. This method is simple and rapid determination of the total aromatic constituents in petroleum products.
社団法人日本分析化学会の論文
1986-01-05