Ehancement of fine structure of ultraviolet spectra applied to direct extraction of drugs from urine.
D000662:Amphetamines / Q000652:urine; D001554:Benzene; D003510:Cyclohexanes; D004809:Ephedrine / Q000652:urine; D006863:Hydrogen-Ion Concentration; D008614:Meperidine / Q000652:urine; D004364:Pharmaceutical Preparations / Q000652:urine*; D012997:Solvents; D013056:Spectrophotometry, Ultraviolet / Q000379:methods*
D000662:Amphetamines; D003510:Cyclohexanes; D004364:Pharmaceutical Preparations; D012997:Solvents; D008614:Meperidine; D004809:Ephedrine; D001554:Benzene