标准摘要
[中文适用范围]： 本标准规定了一批矿物基建筑材料游离氡析出率的测定方法。 本文件仅涉及使用两种测试方法进行 222Rn 呼出物测定：液体闪烁计数（LSC）和伽马射线能谱测定（见附录 A 和附录 B）。 应用本文件中描述的测定方法时，钍气（220Rn）的呼出不影响测试结果。 [外文原描述]： This document specifies a method for the determination of the free radon exhalation rate of a batch of mineral based building materials. This document only refers to 222Rn exhalation determination using two test methods: liquid Scintillation Counting (LSC) and gamma ray spectrometry (see Annex A and Annex B). The exhalation of thoron (220Rn) does not affect the test result when applying the determination methods described in this document.
英文名称Measurement of radioactivity in the environment — Air: Radon-222 — Part 9: Test methods for exhalation rate of building materials