Abstract：
The complex behavior of tritium and the probability of increasing tritium concentrations released in the environment were the promotors for the research and development of laboratory methods that enable to accurately determine the various forms of tritium including organically-bound tritium (OBT) for public and regulatory assurance. The measurement of tritium is a key step for dose and risk assessment. The Cernavoda Nuclear Power Plant (NPP) in Romania improved preparation methods and tested environmental matrices for OBT analysis through intercomparison exercises. This paper describes the international Organically-Bound Tritium (OBT) intercomparison exercise, organized by the Cernavoda Nuclear Power Plant (NPP) in 2019-2020, using fruit sample (quince) from Cernavoda town. Evaluation of the results from the participating laboratories was performed using both robust analysis (Algorithm A) method described in the ISO 13528:2015 standard and ANOVA method. The results obtained are encouraging as an increased number of participating laboratories did not change the observed dispersion of the results for activity concentration level around 50 Bq/L of combustion water. The stability of the remaining sample will be checked in time to investigate its use as a reference material for OBT analysis at the environmental levels.
摘要：
tri的复杂行为和环境中释放的tri浓度增加的可能性是实验室方法研究和开发的促进剂，该方法能够准确确定各种形式的tri，包括有机结合的tri（OBT），以用于公共和监管保证。tri的测量是剂量和风险评估的关键步骤。罗马尼亚的Cernavoda核电站（NPP）改进了制备方法，并通过相互比较练习测试了用于OBT分析的环境矩阵。本文介绍了国际有机结合氚(OBT)比对练习，由Cernavoda核电站（NPP）于2019-2020年组织，使用来自Cernavoda镇的水果样品（quince）。使用ISO13528:2015标准中描述的稳健分析(算法A)方法和ANOVA方法进行来自参与实验室的结果的评估。获得的结果令人鼓舞，因为参与实验室数量的增加并未改变在50Bq/L燃烧水的活性浓度水平下观察到的结果分散性。将及时检查剩余样品的稳定性，以研究其在环境水平上用作OBT分析的参考材料。
