Comparison of gas chromatographic and spectrophotometric methods of determination for caffeine in coffees and teas.
D002110:Caffeine / Q000032:analysis*; D002849:Chromatography, Gas / Q000379:methods; D003069:Coffee / Q000032:analysis*; D013053:Spectrophotometry / Q000379:methods; D013662:Tea / Q000032:analysis*
D003069:Coffee; D013662:Tea; D002110:Caffeine