The rapid quantitative determination of aromatic-type groups in gas oils by high-performance liquid chromatography

Summary A rapid method is described for the quantitative determination of aromatic-type groups in gas oil petroleum fractions. The method involves separation by high-performance liquid chromatography followed by detection with a differential refractometer, whose response to aromatic-type groups is more predictable than an ultra violet absorbance detector. A primary standard is used for calibration, and the precision and accuracy of the method have been investigated and are discussed.