Coupled Supercritical Fluid Extraction/Chromatography of Polycyclic Aromatic Hydrocarbons: Correlation with Solubility Calculations

Abstract
The solubility of: naphthalene, fluorene, phenanthrene, pyrene, and chrysene in supercritical CO2 at two temperatures and pressures up to 200 atm were calculated from fugacities derived via the Peng-Robinson equation of state. The calculated solubilities were correlated with the results of experiments in which polycyclic aromatic hydrocarbons (PAH) in fuel mixtures were extracted with supercritical CO2 and analysed by supercritical fluid chromatography and by gas chromatography.