本文件规定了测定非盐水中总β活性浓度的试验方法。该方法适用于最大β能量约为0.3 MeV或更高的非挥发性放射性核素。低能β辐射源（例如3H、228Ra、210Pb、14C、35S和241Pu）和一些气体或挥发性放射性核素（例如氡和放射性碘）的测量可能不包括在使用本文件所述试验方法进行的总β定量中。 本试验方法适用于原水和饮用水的分析。应用范围取决于水中总可溶性盐的数量以及所用计数器的性能特征（背景计数率和计数效率）。 是实验室吗？s有责任确保该方法适用于测试的水样。交叉引用:ISO 3696:1987ISO 5667-1ISO 80000-10ISO/IEC指南98-3ISO/IEC指南99ISO 5667-3ISO 11929ISO 5667-14ISO/IEC 17025IAEA GSG-2ISO 9696ISO 5667-20购买本文件时提供的所有现行修订均包含在本文件中。

This document specifies a test method for the determination of gross beta activity concentration in non-saline waters. The method covers non-volatile radionuclides with maximum beta energies of approximately 0,3 MeV or higher. Measurement of low energy beta emitters (e.g.3H,228Ra,210Pb,14C,35S and241Pu) and some gaseous or volatile radionuclides (e.g. radon and radioiodine) might not be included in the gross beta quantification using the test method described in this document. This test method is applicable to the analysis of raw and drinking waters. The range of application depends on the amount of total soluble salts in the water and on the performance characteristics (background count rate and counting efficiency) of the counter used. It is the laboratory?s responsibility to ensure the suitability of this method for the water samples tested.Cross References:ISO 3696:1987ISO 5667-1ISO 80000-10ISO/IEC Guide 98-3ISO/IEC Guide 99ISO 5667-3ISO 11929ISO 5667-14ISO/IEC 17025IAEA GSG-2ISO 9696ISO 5667-20All current amendments available at time of purchase are included with the purchase of this document.