Abstract

For the estimation of the tritium activity in environmental samples, the triple to double coincidence ratio (TDCR) method is standardized for the liquid scintillation counter (LSC). Variation of TDCR with tritium activities, optimization of the region of interest for low-level measurement of tritium, the effect of different quenching agents on the TDCR values, and application of TDCR method for the quantification of ionization quench factor (kB) are discussed in this paper. Relative standard deviation in TDCR values at tritium activity levels of 15–140 Bq/L is found to be less than 1%. The the quench curve equation does not depend on the type of quenching agents.

中文翻译：

---

to重测量的三重到双重合方法研究

摘要

为了估算环境样品中的activity活度，对液体闪烁计数器（LSC）进行了三重/双重合率（TDCR）方法标准化。讨论了TDCR随tri活度的变化，optimization的低水平测量的目标区域的优化，不同淬灭剂对TDCR值的影响以及TDCR方法在定量电离淬灭因子（kB）中的应用。这篇报告。发现tri活性水平为15–140 Bq / L时TDCR值的相对标准偏差小于1％。淬灭曲线方程式不取决于淬灭剂的类型。