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随着原子能事业的发展,人们对其造成的环境影响也越来越关心。为了掌握环境质量状况,了解污染程度和迁移规律,寻求控制和治理途径,就要对分布广泛、组成复杂的环境样品进行分析。由于放射性核素含量低,因此很难得到准确的数据,国际上曾多次比对,结果有时相差一至二个量级。我国进行的低水平放射性比对结果也表明,50%的实验室存在系统偏差。为了统一分析量值,保证测量结果在时间和空间的一致性,目
With the development of atomic energy, people are also more concerned about the environmental impact they cause. In order to grasp the status of environmental quality, understand the degree of pollution and migration rules, and seek ways of control and management, it is necessary to analyze the widely distributed and complicated environmental samples. Due to the low content of radionuclides, accurate data are difficult to obtain and many international comparisons have been made, resulting in differences of one or two orders of magnitude sometimes. The results of our low-level radiological comparison also showed that there are systematic deviations in 50% of laboratories. In order to unify the analysis of the value, to ensure the consistency of the measurement results in time and space