Abstract

Different clean-up stages were coupled to rotating-disk sorptive extraction (RDSE) of testosterone, progesterone, 17 beta-estradiol and triclosan in urine samples prior to derivatization and detection by gas chromatography-mass spectrometry (GC-MS). By using Oasis (R) HLB as the sorptive phase, extraction equilibrium was reached after 60 min at a disk rotation velocity of 2000 rpm.