NMR法测定重油中碳、氢的质量百分含量

Determination of Hydrogen and Carbon Contents in Heavy Oils by NMR Spectroscopy

用高分辨的1H-NMR和13C-NMR法对重油中的氢、碳的质量百分含量进行测定。采用标准化合物考察了本方法的准确性,以实际油样考察了方法的重复性,则本方法具有良好的准确性、重复性。然后测定了30个重油油样的氢、碳的质量百分含量,测定结果与元素分析法(ASTMD5291)有很好的一致性。核磁共振法可以用于测定重油中碳、氢含量。

Proton and carbon-^13NMR spectroscopic methods were developed for determination of hydrogen and carbon contents in heavy oils. The precision and accuracy of the NMR methods are comparable with those of currently employed ASTM D-5291 combustion method.