Selective micro solid-phase extraction of epinephrine, norepinephrine and dopamine from human urine and plasma using aminophenylboronic acid covalently immobilized on magnetic nanoparticles followed by high-performance liquid chromatography-fluorescence detection

Micro solid-phase extraction of catecholamines using selective aminophenylboronic acid immobilized on magnetic nanoparticles followed by HPLC-FLD.