Abstract
A solute collection method after off-line supercritical fluid extraction using a moving layer of liquid organic solvent flowing down through a fused-silica capillary (0.5 mm I.D.) is proposed. Recoveries of over 90% were measured for selected polycyclic aromatic hydrocarbons (acenaphthene, phenanthrene, fluoranthene, pyrene and benzo[a]pyrene) and s-triazine herbicides when methanol was used as a trapping solvent.
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