Fast Simulated Distillation Analysis by Modified ASTM D2887, D6352 and D7169

As the oven temperature is raised at a reproducible rate, analytes are eluted and the areas under the chromatogram are recorded. Boiling points are assigned to the time axis from a calibration curve, known as the boiling-point distribution curve, based on a known mixture of normal paraffin hydrocarbons over a fixed range. These paraffin hydrocarbons serve as markers, which identify the time that specific paraffins of known boiling points elute. From these data, we can plot the area between these markers against the boiling-point ranges to create boiling-point distributions for specific crudes or other multicomponent blends.