A flow-through method for scintillation counting of carbon-14 and tritium in gas-liquid chromatographic effluents

作者：Arthur Karmen, Irmgarde McCaffrey, Robert L. Bowman · 发表于：Journal of Lipid Research · 年份：1962 · DOI：10.1016/s0022-2275(20)40412-2 · 被引用次数：48 · 研究领域：Radioactive contamination and transfer、Radiation Detection and Scintillator Technologies、Radioactivity and Radon Measurements

A method for radioassay of gas-liquid chromatographic effluents by scintillation counting has been developed. A cartridge filled with anthracene crystals is used as a "flow-through" radiation detector. Upon leaving the column, the effluent is passed over hot copper oxide, which converts the organic msterials to carbon dioxide and water. If tritium is to be counted, the water is reacted with hot iron to release hydrogen and tritium gases. The effluent is then passed through the anthracene cartridge. The counting rate of the cartridge is monitored continuously during the analysis by a highly efficient, low-background, scintillation counter to yield a record of eluted radioactivity that resembles the conventional mass detector record.