BS EN ISO 18589-3:2017规定了大型土壤中活性的识别和测量 使用伽马光谱法的伽马放射性核素数量。这种非破坏性的方法， 适用于大体积样品（高达约3000 cm3），一次测定一次 所有这些数据的测量-存在光子能量在5千电子伏和3兆电子伏之间的发射器。ISO 18589的这一部分可用于进行常规放射性试验的实验室 以伽马射线为主的测量- 发射放射性核素的特点是伽马射线发射 在40千电子伏和2兆电子伏之间。该方法可以使用锗或其他类型的探测器来实现 比5千电子伏强。ISO 18589的这一部分针对负责测定伽马放射性核素的人员 土壤中存在的辐射防护活性。它适用于监测 环境和现场检查，并允许在发生事故时快速评估伽马射线 土壤样品的活性。这可能与花园、农田、城市或工业场地的土壤有关 可以容纳建筑材料碎石，以及不受人类活动影响的土壤。当未被观察材料的放射性特征超过200时？m还是250？m、 由…制成 这需要岩相性质或人为成因，如建筑材料碎石 按照ISO 18589-2所述，可以粉碎材料，以获得用于测试的均质样品。交叉引用: ISO 18589-2IEC 61452ISO 18589-1ISO 11074ISO 11929IEC 17025ISO 80000-10ISO 10703IAEA TECDOC-619:1991AEA TECDOC 1011:1998ASTM E181-98ASTM D3649-98aIAEA TECDOC 1275:2002EEE 325:1996IEC指南98-1:2009ANSI N42。14:1999包含以下内容:勘误表，2017年12月

BS EN ISO 18589-3:2017 specifies the identification and the measurement of the activity in soils of a large number of gamma-emitting radionuclides using gamma spectrometry. This non-destructive method, applicable to large-volume samples (up to about 3 000 cm3), covers the determination in a single measurement of all the?-emitters present for which the photon energy is between 5 keV and 3 MeV.This part of ISO 18589 can be applied by test laboratories performing routine radioactivity measurements as a majority of gamma-emitting radionuclides is characterized by gamma-ray emission between 40 keV and 2 MeV.The method can be implemented using a germanium or other type of detector with a resolution better than 5 keV.This part of ISO 18589 is addressed to people responsible for determining gamma-emitting radionuclides activity present in soils for the purpose of radiation protection. It is suitable for the surveillance of the environment and the inspection of a site and allows, in case of accidents, a quick evaluation of gamma activity of soil samples. This might concern soils from gardens, farmland, urban or industrial sites that can contain building materials rubble, as well as soil not affected by human activities.When the radioactivity characterization of the unsieved material above 200?m or 250?m, made of petrographic nature or of anthropogenic origin such as building materials rubble, is required, this material can be crushed in order to obtain a homogeneous sample for testing as described in ISO 18589-2.Cross References:ISO 18589-2IEC 61452ISO 18589-1ISO 11074ISO 11929IEC 17025ISO 80000-10ISO 10703IAEA TECDOC-619:1991IAEA TECDOC 1011:1998ASTM E181-98ASTM D3649-98aIAEA TECDOC 1275:2002IEEE 325:1996IEC Guide 98-1:2009ANSI N42.14:1999Incorporates the following:Corrigendum, December 2017