Molokanov A A, Kukhta B A, Yatsenko V N, Bolshakova L I
Burnasyan Federal Medical Biophysical Center Federal Medical Biological Agency, Marshala Novikova 23, 123182 Moscow, Russian Federation.
Radiat Prot Dosimetry. 2011 Mar;144(1-4):419-22. doi: 10.1093/rpd/ncq323. Epub 2010 Nov 9.
An example of a numerical method application for minimum detectable annual dose calculation that can be guaranteed by the operating monitoring programmes for plutonium and uranium is presented. The method analyses the frequency distribution for a total number of counts obtained in n measurements performed during n monitoring intervals that are inside the calendar year. Urine sample radiometric measurement technique for plutonium and uranium operating monitoring programmes is investigated, showing dependences of the detection limits on the frequency of measurements, on number of calendar years under observation and on the activity median aerodynamic diameter (AMAD). Only a probability density function (PDF), for the background number of counts, stochastic variability of urine excretion and uncertainty of the intake pattern were taken into account as the main variables influencing the calculated detection limits. But there is no limitation for the proposed method to include the variability of other influencing model parameters in the calculation procedure.
给出了一种数值方法在最小可探测年剂量计算中的应用示例，该剂量可由钚和铀的运行监测程序保证。该方法分析了在日历年期间的n个监测间隔内进行的n次测量中获得的总计数的频率分布。研究了用于钚和铀运行监测程序的尿样放射性测量技术，显示了检测限对测量频率、观察的日历年数和活度中值空气动力学直径（AMAD）的依赖性。作为影响计算检测限的主要变量，仅考虑了计数背景数的概率密度函数（PDF）、尿排泄的随机变异性和摄入模式的不确定性。但是所提出的方法在计算过程中纳入其他影响模型参数的变异性没有限制。
