THE ROLE OF CAPACITY FACTOR IN METHOD DEVELOPMENT FOR SOLID-PHASE EXTRACTION OF PHENOLIC-COMPOUNDS .2.

Recently, a simple method was developed for the determination of capacity factors of phenolic compounds on solid-phase extraction cartridges [J. Chromatogr. A, 693 (1995) 217]. In the present paper the capacity factors determined by this method are used to predict recoveries of phenolic compounds in solid-phase extraction at three different sample volumes. The values are compared with those of recovery tests from both model solutions and spiked surface water samples. Based on calibration data the minimum sample concentrations which can be determined by the SPE procedure are also calculated from the capacity factors.