| 摘要 |
<p>The present invention provides quantitation of seven classes of compounds (saturates, 1 -4+ ring aromatics, sulfides, and polars) present in petroleum streams boiling from 550 - 1050°F. Operating the present invention in the preparative mode will allow us to load and collect multi-milligram amounts of material. In the present invention, all seven fractions are produced in a single run, whereas the most commonly used preparative liquid chromatographic separations requires two or more large scale separations to generate similar fractions. The present invention uses 100 times less solvent. The present invention protocol provides a quicker and cheaper alternative to most commonly used preparative liquid chromatographic separations and is flexible enough to target many refining and chemicals problems.</p> |
