Abstract
Nonylphenoxypolyethoxyethanol-toluene scintillator (NT-scintillator) has been found to possess excellent characteristics for counting tritium or carbon-14. Counting characteristics of the NT-scintillator for aqueous samples were examined in detail.
By using 1N NaOH, 2N HCl and the NT-scintillator, various samples were incorporated in large quantities as stable homogeneous solutions for extended periods and counted at a constant efficiency.
The present method was also shown to be applicable for the determination of radioactivities of tritium and carbon-14 doubly labeled compounds with the least troubles.
