title: Mobile phase versus stationary phase approaches to the direct injection of biological fluids in liquid chromatography.
abstract: The liquid chromatographic analysis of drugs in urine through direct injection without any sample pretreatment was extended to micellar chromatography with nonionic surfactants, the Pinkerton ISRP column and the shielded hydrophobic phase (Hisep) column. The feasibility of using each was demonstrated through the determination of the diuretic, hydrochlorothiazide, in urine. Good separation, recovery, precision and linearity, and adequate limits of detection were obtained for this analysis with all three techniques. The advantages and limitations of the mobile phase approach of micellar chromatography and the two stationary phase approaches are discussed for the direct injection of urine as well as other biological fluids.
authors.affiliation: Seton Hall University, Department of Chemistry, South Orange, NJ 07079.
authors.forename: J J
authors.initials: JJ
authors.lastname: Fett
authors.forename: F
authors.initials: F
authors.lastname: Hischak
authors.forename: L J
authors.initials: LJ
authors.lastname: Cline Love
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D003902:Detergents; D006801:Humans; D006852:Hydrochlorothiazide / Q000652:urine*; D006863:Hydrogen-Ion Concentration; D008823:Micelles; D000077423:Polidocanol; D011092:Polyethylene Glycols
chemical_list: D003902:Detergents; D008823:Micelles; D000077423:Polidocanol; D006852:Hydrochlorothiazide; D011092:Polyethylene Glycols