Automatic on-line extraction coupled with electrochemical detection as an improved method for the HPLC co-analysis of codeine and morphine in plasma and gastric juice.
Heybroek
W M
WM
Department of Clinical Pharmacology, St Bartholomews Hospital Medical College, Little Britain, London, UK.
Caulfield
M
M
Johnston
A
A
Turner
P
P
D001322:Autoanalysis; D002851:Chromatography, High Pressure Liquid; D003061:Codeine / Q000032:analysis* / Q000097:blood; D004563:Electrochemistry; D005750:Gastric Juice / Q000737:chemistry*; D006801:Humans; D009020:Morphine / Q000032:analysis* / Q000097:blood
D009020:Morphine; D003061:Codeine