【摘要】 <正> 一、实验部份1.氚水样品用氚水（99.5%,北京化工厂）将比度为70 Ci/ml的氚水分别稀释为5 Ci/ml,10 Ci/ml,14 Ci/ml,20Ci/ml,25 Ci/ml,28 Ci/ml和35 Ci/ml七个样品,并分别装入100μl的微量样品管中,插上聚四氟乙烯支架,然后分别装入直径为5 mm的NMR样品管中,NMR样品管内事先加入CCl₄,高度为3 cm,以避免样品管旋转时微量样品更多还原

【Abstract】 Seven tritiated water samples of 0.5 Ci/ml to 35 Ci/ml are employed. The³H NMR signal intensity increases in propotion to the radioactivity determined byliquid scintillation counting. The double ³H NMR signal from tritiated water(J_TH=0.59 Hz, 25 Ci/ml at 30±1℃) is observed. The rate constant for the ex-change between triton and proton is 2.62 S^-. The ³H NMR spectra as a functionor time provide the information about self--radiolysis of tritiated water.更多还原