Rapid isolation with Sep-Pak C18 cartridges and wide-bore capillary gas chromatography of some barbiturates.
A simple and rapid method for isolation of nine barbiturates with Sep-Pak C18 cartridges from human urine, plasma and whole blood, is presented; the detection of drugs was made by wide-bore capillary gas chromatography (GC) with flame ionization. The drug-containing samples, after mixing with dilute acid solution, were directly applied to the cartridges and eluted with either chloroform/methanol (9:1) or acetonitrile. Separation of the nine drugs was satisfactory with use of an intermediately polar HP-17 capillary column. Recoveries of most compounds were excellent for both chloroform/methanol and acetonitrile as elution solvents. However, backgrounds were cleaner and evaporation time was much shorter for the chloroform/methanol system. The present isolation method with use of Sep-Pak C18 cartridges and wide-bore capillary GC seem very useful in the fields of forensic chemistry, clinical toxicology and clinical pharmacology.
O
O
Suzuki
T
T
Kumazawa
H
H
Seno
H
H
Hattori
D001463:Barbiturates / Q000302:isolation & purification*; D002849:Chromatography, Gas / Q000295:instrumentation; D006801:Humans
D001463:Barbiturates