Abstract
Alkanes with 3–6 carbon atoms are employed as the mobile phase in liquid chromatography. Compounds with low boiling points are pressurized and liquefied, and the pressure of the system is kept sufficiently high to exceed the vapour pressure of the now liquid mobile phase. Polynuclear aromatic hydrocarbons and phthalates are well separated by employing pressurized liquefied fluids. Propane gave the highest efficiency of the examined solvents.
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