Problems in the determination of the specific radioactivity of uniformly 14-C-labelled amino-acids after their reaction with ninhydrin.
D000596:Amino Acids / Q000032:analysis*; D001322:Autoanalysis; D002250:Carbon Radioisotopes; D002852:Chromatography, Ion Exchange; D004355:Drug Stability; D007192:Indenes; D009555:Ninhydrin; D011874:Radiometry
D000596:Amino Acids; D002250:Carbon Radioisotopes; D007192:Indenes; D009555:Ninhydrin