... SPEcartridge, wash with 500 µL water, elute with 1 mL MeOH. Evaporate the eluate to1 HPLC Methods for Recently Approved Pharmaceuticals. by George LunnCopyright 2005 John Wiley & Sons, Ltd. ... (6.6,LOD <0.02 µg/mL), perphenazine (6.9, LOD 0.002 µg/mL), phenazone (3.9, LOD HPLC METHODS FOR RECENTLY APPROVED PHARMACEUTICALS Acrivastine 90.05 µg/mL), phencyclidine (5.3, LOD 0.05 µg/mL), ... publications, HPLC Methods for Pharmaceu-tical Analysis, Volumes 1–4 (George Lunn and Norman R. Schmuff, John Wiley,New York, 1997–2000) and Handbook of Derivatization Reactions for HPLC (GeorgeLunn...