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采用射气法测定了福建省金鸡山疗养院温泉中~(226)Ra和~(222)Rn浓度。钻井水中~(226)Ra和~(222)Rn平均浓度分别为0.024Bq/L和6.260Bq/L;浴池水中~(226)Ra和~(222)Rn平均浓度分别为0.007Bq/L和7.543Bq/L。浴池水中~(222)Rn浓度乘以本文测定的f值(2.39×10~(-3))为浴室空气中~(222)Rn浓度,其为18.0Bq/m~3。假定平均呼吸率为1.2m~3h~(-1),病人和医务人员年累积时间分别为30h和2000h,则估计的病人和医务人员在浴室内的年摄入量分别为648Bq/a和43200Bq/a。本文还估算了~(222)Rn及其子体产生的年有效剂量当量。
The concentrations of ~ (226) Ra and ~ (222) Rn in the hot springs of Jinji Hill Sanatorium in Fujian Province were measured by gas-jet method. The average concentrations of ~ (226) Ra and ~ (222) Rn in drilling water were 0.024Bq / L and 6.260Bq / L, respectively. The average concentrations of ~ 226 and ~ 222 Rn in bath water were 0.007Bq / L and 7.543 Bq / L. The concentration of ~ (222) Rn in bath water is multiplied by the value of f (2.39 × 10 -3), which is the concentration of ~ (222) Rn in the air of bath, which is 18.0Bq / m ~ 3. Assuming that the average respiratory rate is 1.2m ~ 3h ~ (-1) and the annual cumulative time of patients and medical staff is 30h and 2000h respectively, the estimated annual intake of patients and medical staff in the bathroom are 648Bq / a and 43200Bq, respectively / a. We also estimated the annual effective dose equivalent of ~ (222) Rn and its progeny.