用超灵敏质谱法测量了京郊玉泉山水的氚含量。水样品经电解浓集并电解成气体后送入回旋加速器离子源,水中氚经加速到高能量(10MeV)后,用△E-E粒子望远镜鉴别和记录。 测量是相对一个已知氚含量的样品进行的,结果为50个氚单位,与用β衰变法的测量结果一致。 The tritium content of Yuquan landscape in Beijing suburbs was measured by ultra-sensitive mass spectrometry. The water samples were concentrated by electrolysis and electrolyzed into gas, which was then sent to the cyclotron ion source. The tritium in the water was accelerated to high energy (10 MeV) and identified and recorded using the ΔE-E particle telescope. The measurement was performed on a sample of a known tritium content with a result of 50 tritium units, consistent with the measurement by the beta decay method.