【摘要】 用蒸馏和液体闪烁计数法测量了中国工程物理研究院核物理与化学研究所原工作地点核退役过程中直接接触氚和间接接触氚工作人员的尿样 ,氚浓度在 10 2 ～ 10 5Bq/L ,最大氚浓度为 2 7× 10 5Bq/L ,折合剂量当量约为 0 19mSv。短期观测了 2 3名氚生物半衰期 ,其范围为 5 5～ 14 8d ,平均值 9 1d ;中期观测了 5名氚生物半衰期 ,其范围为 7 6～ 9 4d ,平均值为 8 5d。观测的共2 8名工作人员氚生物半衰期与理论值 10d接触 ,并且与国内外的观测值符合。更多还原

【Abstract】 Tritium in urine of dozens of workers in the course of the decommissioning is determinated by distillation and liquid scintillation counter.Their concentrations are in the range of 10 2～10 5Bq/L and the maximum concentration is 2.7×10 5Bq/L,being dose equivalent 0.19mSv.The half-time of tritium excretion of 23 workers are 5.5～14.8d and the average value is 9.ld in short time.The half-time of tritium excretion of 5 workers are 7.6～9.4d and the average value is 8.5d in middle time.The half-time of 28 workers in the work not only comes near to theoretical value 10d,but also fully tallys with internal and external observated values.更多还原